A、She has to change the time for the trip. B、She hasn’t decided where to go next month. C、She can’t afford the time for the trip

M: Miss Hanson, thank you for sending me this note. I’m sorry to hear Mary is being a problem.
W: I’m not sure what’s happening to Mary. She’s usually an excellent student. She completes all her work and she’s quiet in class. Then, last month, she just changed.
Q: What can you infer from the conversation?

M: You’re going to make a trip to Iceland, aren’t you?
W: Yes. But I haven’t got the plane ticket yet. I’m thinking of postponing the trip to next month since this is the busiest month for the airlines.
Q: What do we know about the woman from the conversation?