Mandy Purchased a Business Law Book and Used It During

Mandy purchased a business law book and used it during her business law class.She later loaned the book to Steven,and then to Christen.Another student accused her of copyright violation and threatened to report her to the book publisher and also to her school's ethics board.Did Mandy violate the copyright laws?

A) Yes.
B) No, because her loans would be covered by the fair use doctrine.
C) No, because her loans would be covered under the first sale doctrine.
D) No, because her loans would be covered under the equivalency doctrine