Which of the Following Is a Reason Why Production Capacity

Which of the following is a reason why production capacity utilization began to decline around the end of World War I?

A) Firms that had dominated their respective industries before the war maintained their positions due to lack of competition.
B) High entry barriers prevented new companies from entering into the market place.
C) Financial markets placed more pressure on firms to continually increase sales volume and profits.
D) Financial markets were becoming less sophisticated.
E) Capacity had been decreased greatly for the war.