听力原文:W: What about your chemistry class this morning, Paul?
M: We were supposed to have a chemistry class but Mr. Anderson was out of town for a meeting, so we had a history lesson instead.
What did Paul do this morning?
A.He attended a history lesson.
B.He attended a chemistry lesson.
C.He attended a meeting.
请帮忙给出正确答案和分析,谢谢!