A perfect competitor is a $\_\_\_\_\_\_\_\_\_\_$ and can earn economic profits $\_\_\_\_\_\_\_\_\_\_\_\_.$

a$.$

price maker, in both the short run and long run

b$.$

price taker, in only the short run

c$.$

price taker, in both the short run and long run

d$.$

price maker, in only the long run

e$.$

price maker, never