Choose the correct letter, A, B or C. Why does the man think they should skip some photos of the first volcano in the presentat

Tim: Morning, Jenny.
Jenny: Hi Tim, how’s everything going on?
Tim: Not bad, but I’m really nervous about our geography assessment next week. Have you done any work on it yet?
Jenny: I’ve just gone over some of the slides where there are a few difficult terms, but I think it would be helpful if I could discuss it together with someone else. Would you like to talk about it with me?
Tim: That sounds great! Have you got any information about the requirements for the assessment?
Jenny: For our test last semester, all of us tried our best to collect raw data to meet the requirements so as to achieve a pass. But according to what the tutor has said, this term there won’t be any need for us to do so.
Tim: I read through the notes and they said that we are all going to be given a set of instructions that we can choose to follow if we wish, but it’s not mandatory and we can complete the exam as we wish.
Jenny: I don’t think that it would be hard for us to pass the assessment. As long as we don’t copy the answers from anyone else’s exam paper, I think we’ll be sure to pass.
Tim: Definitely, I agree. Shall we put on a slide show presentation with information of all kinds of volcanoes? I think it will really help us to revise the recognition.
Jenny: Ok, great. First, let’s look at Pompeii, which is regarded as the most famous one among all the volcanoes; therefore we might find it much easier to find a large amount of information about it on the Net.
Tim: I think I should exclude some of the pictures in the presentation, since many people were killed and some of them can be quite disturbing. It is so lucky that there is going to be a double free break today, so we will have a bit of time to modify this together.
Jenny: Well, the next one to mention is Mount Fago. This is an ancient, mythical volcano, whose site is still ambiguous. In Mexico as well as the USA, there are mountainous regions, both of which are rumoured to be the location of this volcano.
Tim: It’s not that reasonable to list two unrelated locations for one volcano, but since no one has been capable of figuring out which is the correct one, we have no choice. It’s amazing that we cannot find any other example of a volcano in existence today that is haunted by so much mystery.
Jenny: Definitely yes. I suggest we’d better search online for some information about Mount Etna in Sicily, which is well known for the stunning panoramas that one can appreciate from its peak. According to Google, it’s a relatively new volcano compared to others in the nearby region. That’s the reason why it has very few of the features found in older volcanoes.
Tim: Oh, interesting.
Jenny: Might we present any information on Mount Herton? Because I don’t think that any of the other students have carried out much survey into it, even though it has several unique traits.
Tim: Well, then I think we can just ignore it, since it’s a man-made volcano and not that closely linked to our syllabus and probably won’t be tested in the exam questions.