A、The trains were delayed. B、He couldn’t find a bus stop. C、Something went wrong with his friend’s motorbike. D、There was traffi

M: If you’ll just have a seat, Ms. Thomas, I’ll look into your mouth. Open wide! Em, still a bit red and swollen. Have you been taking the tablets I prescribed and cut down on the cigarettes?
W: Yes, doctor. It’s actually not half as sore as it was.
M: Em, yes. Your voice sounds better as well. Just take the tablets for a few more days and we’ll have another look then.
Question：What is the patient suffering from?

M: Sorry, I’m late. Did you hear about the trains?
W: Yes, I heard they were running late.
M: Well, I realized I might be late, so I tried to find a bus and on my way I bumped into Jerry. He offered me a lift on his motorbike. But unfortunately, it was exhausted by flameout, so in the end, I had to walk.
Question：Why is the man late?