Under pure competition, the market price of an output is $3. The output schedule of a firm using input X is listed in the table below. If the price of input X is $12, how many units of input X will the firm employ to maximize profits?Units of XMarginal Product110.029.938.847.756.665.574.483.392.2
A. 5
B. 7
C. 4
D. 9
Answer: B
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