The need for price floors in the markets for farm goods arose in part due to

a. pressure from consumer groups that were angry over paying high prices.

b. inefficiencies in markets for farm goods.

c. persisting rightward shifts in the market supply curves for farm goods, due to technological improvements in agriculture.

d. excessive government regulation.

e. persisting rightward shifts in the market demand curves for farm goods, due to higher incomes of consumers.