Which work praised the idea of equality and democracy and also celebrated the dignity, the self-reliant spirit and the joy of the common man?

Which work praised the idea of equality and democracy and also celebrated the dignity, the self-reliant spirit and the joy of the common man?

A.Leaves of Grass by Walt Whitman.

B.Self-reliance by Ralph Waldo Emerson.

C.Life on the Mississippi by Mark Twain.

D.Sister Carrie by Theodore Dreiser.

正确答案是A