Suppose That a Firm Needs 20 Workers, and Pays 10

Suppose that a firm needs 20 workers, and pays 10 male workers $100 per day and 10 female workers $60 a day. These wage differences are ________ caused by employer discrimination since ________.

A) most likely; the employer could decrease profits by $1,000 per day by hiring all women
B) most likely; the employer could increase profits by $400 per day by hiring all women
C) likely not; the employer could increase profits by $400 per day by hiring all women
D) likely not; the employer could decrease profits by $1,000 per day by hiring all women