According to the man, what is the major advantage of the distance-learning course？A．It all

According to the man, what is the major advantage of the distance-learning course？

A．It allows them to meet students from other universities.

B．It promotes the concept of self learning.

C．It allows more flexibility in students" schedules.

D．It doesn"t require any examinations.

请帮忙给出正确答案和分析，谢谢！