A、Because he can’t notice the dirty. B、Because he thinks she has the responsibility to do so. C、Because he does not know what is

W: It doesn’t look like you have vacuumed the living room or cleaned the bathroom.
M: No, I haven’t. You know, I had a worst day. I am so tired. Look, I promise I’ll do it this weekend.
W: Listen, I know your feeling. I am tired, too. But I came home and did my share of, the housework. I mean, that’s the agreement, right?
M: All right, we agreed. I’ll do it in a minute.
W: Come on. Don’t be that way. You know, I should not have to ask you to do anything. I mean, we both work, we both live in the house, we agreed that housework is both of our responsibility. I don’t like to have to keep. reminding you about it. It makes me feel like an old nag or something.
M: Sometimes you are an old nag.
W: Oh, great!
M’ No, it’s just that i don’t notice when things get dirty as you do. Look, all you have to do is tell me, and I will do it.
W: No, I don’t want to be put in that position. I mean, you can see dirt as well as I can. Otherwise-I mean, that puts all the responsibilities on me.
M: It’s just that cleanliness is not a high priority with me. There are other things I would much rather do. Besides, the living room floor does not look that dirty.
W: Really?
M: Just a couple of crumbs.