What does the professor advise the student to do in order to keep up with the class she is

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What does the professor advise the student to do in order to keep up with the class she is in?

A.Take the introductory course

B.Watch some video recordings

C.Do extra reading

D.Drop out of her marketing class

此题为多项选择题。请帮忙给出正确答案和分析,谢谢!

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