There Is No Exact Definition of a Monopoly, but in General

Multiple Choice

There is no exact definition of a monopoly, but in general a monopoly:

A) exists when one or a few firms dominate the sales of a product or service
B) one firm makes a better product than others in the same market
C) consumers prefer one firm over all others
D) one firm has more than 30% of the market share for a certain product
E) a firm does not have to pay any federal taxes