Which Statement Is the Best Explanation for the Imposition of a Price

Which statement is the best explanation for the imposition of a price floor in the market for corn

A) Policymakers have studied the effects of the price floor carefully and recognize that the price floor is advantageous for society as a whole.
B) Buyers and sellers of corn have agreed that the price floor is good for both of them and have therefore pressured policymakers into enacting the price floor.
C) Buyers of corn, recognizing that the price floor is good for them, have pressured policymakers into enacting the price floor.
D) Sellers of corn, recognizing that the price floor is good for them, have pressured policymakers into enacting the price floor.