单项选择题
M: Could you tell me the timetable of the school bus W: Well, tile bus leaves here for the campus every two hours from 6:30 am. But on weekends it starts half an hour later.
A.8:00. B.8:30. C.9:00.
A.About 200 km. B.About 2,000 km. C.About 350 km.
A.At 2:45. B.At 3:00. C.At 3:15.