A、At 6:40. B、At 6:50. C、At 7:30. D、At 7S40. C女士催促男士抓紧时间，并说现在已经6：50了；男士让女士放松，并说演出40分钟后才开始。由此可以推断，演出开始的时间是7：30。

M: How is the movie last night?
W: The worst ten dollars I’ve ever spent, but Tina seemed to have enjoyed it.
Q: What does the woman mean?

W: Hurry up! It’s already 6:50.
M: Relax. The show won’t start in another 40 minutes.
Q: When will the show start?