Which of the following statements about Mark Twain is True？

A.Mark Twain is the pen name of Samuel Langhorne Clemens.

B.Mark Twain was called “the father of American literature”.

C.Many of Mark Twain’s great works were set in the background of the Amazon River.

D.Mark Twain is regarded as the founder of American critical realism literature.

正确答案：Mark Twain is the pen name of Samuel Langhorne Clemens.Mark Twain was called “the father of American literature”.Mark Twain is regarded as the founder of American critical realism literature.