答案及解析：[单选题]From the dialogue, which is one of the advantages of teaching by way of MOOC professor Chen mentione - 语言文学类题库- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题]From the dialogue, which is one of the advantages of teaching by way of MOOC professor Chen mentioned?
AIt is free.
BIt is convenient.
CThey would cut it into small pieces and that would be quite easy for students to remember what the teachers have been teaching.