【单选题】

Woman: What’s the difference between a lesson and a lecture

Man: Well, they are both ways of imparting knowledge, but the main difference is that you participate in a lesson whereas you just listen to a lecture.A、lecture is generally given to a much larger group.
Question: What does the man mean
A、A、lesson requires students’ active involvement.
B、Students usually take an active part in a lecture.
C、More knowledge is covered in a lecture.
D、There is a larger group of people interested in lessons.