When Sports Were First Desegregated,the Existence of "Entry Barriers" in Top-Level

When sports were first desegregated,the existence of "entry barriers" in top-level competitive sports in the U.S.created a situation in which

A) white athletes were always the best players on integrated teams.
B) black athletes sat on the bench more than they played.
C) black athletes had better performance records than white athletes.
D) black athletes received higher salaries than white athletes.