The word "discrepancy" (Para. 3) most probably means ______.

A．It requires formal training.
B．It is often enjoyed by those with strong analytical ability.
C．It is disliked by blacks.
D．It is more difficult to learn than classical music.

A．Blacks have special innate ability in music.
B．Unlike others, blacks do not have innate ability in music.
C．Jazz is one of the narrow channels through which blacks express their ability in music.
D．Those who have money and time choose mathematics over music.