M: Ah, where am I? ,F: Excuse me, do you need any help? ,M: I want to go to the Science Museum. But I've been lost for the past few hours, and I can't use these ticket machines. ,F: Uh, well, just press this button of the ticket machine, then, get on the train at platform number four. ,M: All right, oh, and how often do the trains come around this time of day? ,F: Usually they come about every 6 minutes.
(A) M: Thanks. The train comes every six minutes, so I think I should wait here. (B) M: Thanks. The bus comes every six minutes, so I think I should wait here. (C) M: Oh, the train comes every 4 minutes. I'll wait right here. Thank you. (D) M: I didn’t hear you. Please could you tell me again?
A