What can be inferred about the man when he says this:A．He is ashamed of his misconception

What can be inferred about the man when he says this:

A．He is ashamed of his misconception about the gold rush.

B．He is uncertain of the validity of his information.

C．He is confused about the chronology of events in the lecture.

D．He disagrees with the other student"s statement about the gold rush.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！