If labour market discrimination crowds women into a limited number of occupations so that the number of occupations available to men increases, then ?

A. wages of men will be higher but the marginal productivity of men will be lower than it otherwise would be
B. the wages of men will be lower but the marginal productivity of men will be higher than it otherwise would be
C. both the wages and the marginal productivity of men will be lower than they otherwise would be
D. both the wages and the marginal productivity of men will be higher than they otherwise would be