Which of the Following Statements Most Accurately Explains Why "Holocaust

Which of the following statements most accurately explains why "Holocaust denial" persists?

A) Many other nations and people have suffered, so it is not more important than other incidents.
B) This sort of denial is common practice, and so should be expected.
C) It is motivated by anti-Semitism and revisionist history by racial and religious extremists.
D) Both "many other nations and people have suffered, so it is not more important than other incidents" and "this sort of denial is common practice, and so should be expected."