10. Which of the following statements is true?

a	Cost-push inflation occurs as prices rise because of a rise in per-unit cost of production (unit cost = total cost/units of output). With cost-push inflation, prices rise but output falls.
b	Rising costs reduce profits and the amount of output firms are willing to supply at the current price level. As a result, the economys production of goods and services declines and the price level rises.
c	Supply shocks have been the major source of cost-push inflation. Supply shocks occur when there are dramatic increases in the price of raw materials or energy.
d	All of the above.
e	Only a) and b)