Summing Up Governmental Intervention in the Pricing of Goods, We

Summing up governmental intervention in the pricing of goods, we can say it

A) occurs only under wartime conditions
B) has grown considerably during the past two decades and now characterizes the majority of our markets
C) has peaked in the 1970s and now has only a shadow of its former influence
D) occurs in relatively few markets because most market prices are determined by the forces of demand and supply
E) occurs only in the production of farm goods