Which of the following market characteristics would limit competition?

Which of the following market characteristics would limit​ competition?

Competition would be limited if

A.

firms cannot raise the price of their product above that of competitors without losing all sales.

B.

consumers have no impact on market price.

C.

customers are not free to take their business to whomever they choose.

D.

new firms entering an industry have to

invest in research or product development