Which of the Statements Below About Communication in the White-Crowned

Which of the statements below about communication in the white-crowned sparrow is NOT correct?

A) The white-crowned sparrow's song is an advertisement display behavior.
B) The white-crowned sparrow's song is learned by imprinting, a sensitive period that takes place about 10-50 days after hatching.
C) During the learning phase, the white-crowned sparrow's subsong is a sequence of unstructured twittering.
D) If a tape of another species song, for example the swamp sparrow, is played during the sensitive period, the white-crowned male will learn that song.
E) If deprived of hearing the adult male's song during the early sensitive period, the bird will continue to sing an unstructured twittering throughout its life.