A、He is also concerned with protecting environment. B、He thinks the woman is too serious about these bottles. C、He always throws

M: Betty, fancy seeing you here. I didn’t know you took the subway.
W: I don’t usually. It’s just that I’m fed up with driving and paying so much for gas, and the buses are crowded and unreliable. So I thought I’d give this a try.
Q: What does the woman say about the transport means?

W: Mark, did you just say "throw away" those empty bottles after the party? You have to recycle them.
M: Take it easy. I meant to say "recycle". I also get upset when people just throw away things that could be recycled.
Q: What does the man mean?