问题详情

Why was the student permitted to sign up for the professors film theory course？

A．Her high school course fulfilled the requirement for previous course work.

B．The computer system that usually blocks students was not working properly.

C．An employee in the department did not follow instructions.

D．The professor made an exception in her case.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！