Evidence That Experience Is Important in White-Crowned Sparrows Learning to Sing

Evidence that experience is important in white-crowned sparrows learning to sing includes which of the following?

A) They will not produce any song at all if they do not hear other birds sing.
B) White-crowned sparrows raised in a laboratory cannot learn how to sing properly.
C) They need to hear songs from other male white-crowned sparrows from 10-50 days after hatching.
D) They must imprint on their father to learn how to sing their song properly.
E) They need to hear songs from any sparrow from 10-50 days after hatching to sing properly.