A． Blacks have special innate ability in the music field.
B． Blacks are more interested in music than the other three.
C． Blacks do not have innate ability in the other three.
D． Music doesn't require formal training while others do.

A． It is disliked by blacks.
B． It requires formal training.
C． It is more difficult to learn than classical music.
D． It is very popular among rich people.

A． They have innate ability in these music fields.
B． They spend more time in these limited fields.
C． They learn them from their ancestors.
D． They practice them through listening to tapes repeatedly.