Which of the Following Is the Most Likely Explanation for the Imposition

Which of the following is the most likely 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 they recognize that the price floor will improve the efficiency of resource use.
B) Buyers and sellers of corn have agreed that the price floor is good for both of them and have therefore pressured policy makers into enacting the price floor.
C) Buyers of corn, recognizing that the price floor is good for them, have pressured policy makers into enacting the price floor.
D) Sellers of corn, recognizing that the price floor is good for them, have pressured policy makers into enacting the price floor.