Theodore Dreiser' s focus shifted from the pathos of the helpless protagonists at the bottom of the society to the power of the American financial tycoons in the late 19th century in his work （）.

Theodore Dreiser' s focus shifted from the pathos of the helpless protagonists at the bottom of the society to the power of the American financial tycoons in the late 19th century in his work （）.

A.The Genius

B.An American Tragedy

C.Dreiser Looks at Russia

D.Trilogy of Desire

正确答案是D