Canaries Can Sing with Either Their Left or Right Hemispheres,but

Canaries can sing with either their left or right hemispheres,but

A) they cannot sing the same song with both at the same time.
B) most have a strong left-hemisphere preference.
C) they cannot sing with their left hemisphere and their syrinx at the same time.
D) most have a strong right-hemisphere preference.
E) they cannot sing with their syrinx.