单项选择题
W: Hey, the train will start at 8:30. We need to hurry. According to your watch, there is only 10 minutes left!
M: But my watch is 20 minutes fast!
W: Wow, so we still have some time!
M: Why not have a drink with me
A. 8:30.
B. 8:10.
C. 8:20.
D. 8:00.