To the extent that a governmental price control succeeds in affecting price, it can be expected to lead to a corresponding:
a. reduction in the volume of sales only if the price is forced down.
b. increase in the volume of sales whether the price is forced up or down.
c. decrease in the volume of sales whether the price is forced up or down.
d. reduction in the volume of sales if the price is forced down and an increase in the volume of sales if the price is forced up.