Which of the Following Is False

Which of the following is false?

A) For the monopsonist, marginal factor cost decreases as it buys additional units of a factor.
B) For the monopsonist, the supply curve of the factor it buys is different from the marginal factor cost curve.
C) The monopsonist buys that quantity of a factor at which marginal revenue product equals marginal factor cost.
D) The monopsonist pays its factors a dollar amount less than its marginal factor cost.