The fact that a consumer is not required to buy the goods that a given firm produces, as well as the fact that the consumer might want the goods a firm produces, but may choose to buy from other firms instead.
a) are two stark realities any business firm must recognize.
b) will reduce the revenue a firm receives and it should shut down.
c) is part of the process to a sustained pattern of profits.
d) means the firm has reached it shutdown point and should exit.