Whitman has made radical changes in the form of poetry by choosing freeverse as his medium of expression．What are the characteristics of Whitman's free verse?

Whitman has made radical changes in the form of poetry by choosing freeverse as his medium of expression．What are the characteristics of Whitman's free verse?

A.It doesn't have fixed beat or regular rhyme scheme.
B.The poetic lines are simple and prose-like, varying in length, which allows him to express his ideas freely.
C.Whitman also applies oral English in his free verse to make it an effective way to express freely the feelings of common people.