During recessions, business must:
a. cut per-unit production costs so they can cut the selling price and increase sales.
b. reduce output levels to bring quantities supplied in line with the reduced quantity demanded.
c. cut per-unit production costs and increase the selling price, and also increase output levels to bring quantities supplied in line with the expected quantity demanded.
d. increase per-unit production costs so they can reduce sales even further, and also reduce demand to match the quantities supplied.
e. cut per-unit production costs to reduce the selling price, and also reduce output levels to bring quantities supplied in line with the reduced quantity demanded.