题目：
Which of the following is least accurate with regard to advertising for firms operating under monopolistic competition（）
A. The increase to average total costs associated with advertising increases as output increases.
B. Advertising expenses are high relative to perfect competition and monopoly.
C. Advertising is necessary to communicate the unique features of a firm’s products.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
