单选题
Which of the following is NOT a characteristic of perfect competition?
A、
The products produced within a given market are homogenous.
B、
The demand curve for an individual firm is a vertical line.
C、
The size of each firm is small relative to the size of the overall market.
【正确答案】
B
【答案解析】
Under perfect competition individual firms have no control over price resulting in a demand schedule that is perfectly elastic or horizontal.
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