单项选择题
M: I’m leaving for South America tomorrow.
W: Are you goingwith the group
M: That means more money. I can manage by myself.
W: But group traveling is safer.And you can enjoy better service.
M: You are right, but I just can’t put up with the fixed schedule.
A. It’s safer.
B. It’s cheaper.
C. It’s more flexible.
D. It’s more exciting.