Zebra Finches Display Sex Differences in Both Organization of Song

Multiple Choice

Zebra finches display sex differences in both organization of song nuclei in the brain and in singing behavior. This appears to be the result of both the organizational and the activational effects of hormones in that

A) estrogen early in life organizes the development of a female song system, and testoserone in adulthood stimulates song production.
B) estrogen early in life organizes the development of a male song system, and testoserone in adulthood stimulates song production.
C) testosterone early in life organizes the development of a female song system, and estrogen in adulthood stimulates song production.
D) testosterone early in life organizes the development of a male song system, and estrogen in adulthood stimulates song production.