M: Excuse me, could you tell me the school bus schedule? W: Well, the bus leaves here for the campus every hour, starting at 6:30 a.m. But on Saturdays, the schedule starts half an hour later., Question: When does the first bus leave on Saturday? (A) At 6:30 a.m. (B) At 7:00 a.m. (C) At 7:30 a.m.
(B) At 7:00 a.m.