A、The class thought the demonstration was too complex. B、Too many students showed up. C、The professor didn’t show up. D、The prof

W: It only takes six hours from here to Los Angeles, but you’ll have a two-and-half-hour layover between the flights.
M: That’s all right. I don’t mind spending some time in Los Angeles visiting my friends.
Q: How many hours will the man be in Los Angeles?

W: Why didn’t you have your geology class today?
M: Only three out of a class of twenty-five showed up. Since the professor had planned to present a complex demonstration, he decided to cancel the class until everybody could be present.
Q: Why didn’t the geology class meet today?