Textbook Fraud Occurs Under Which of These Circumstances

Textbook fraud occurs under which of these circumstances?

A) faculty sell complimentary textbooks that they received from publishers to book dealers who resell the books
B) a person falsely and intentionally claims to that another publisher stole their work and put it in their own textbook
C) a textbook is published with no credit given to the author of the book by the publisher
D) faculty sell textbooks they have written with false data