Many Economists Suggest That Absent Legal Mechanisms of Discrimination, the Wage

Many economists suggest that absent legal mechanisms of discrimination, the wage paid to whites and blacks will converge because

A) if employers can hire whites and blacks at the same wage they will hire equal numbers.
B) employers will feel guilty about hiring only whites.
C) employers will feel guilty about paying whites more when other firms pay equally.
D) it will be in the interest of profit minded employers to hire blacks, thus bidding up their wages.