Which of the Following Statements About the Development of Singing

Which of the following statements about the development of singing behavior in white-crowned sparrows is false?

A) If a male is deafened after he sings his correct species-specific song, he will continue to sing like a normal bird.
B) Female songbirds can be induced to sing by treatment with testosterone.
C) Females learn their species song, but they do not normally express it under natural conditions.
D) Testosterone is not necessary for singing in males once they have learned their song.
E) To sing normally as an adult, a male must hear its species-specific song as a nestling.