Multiple Choice
Suppose that the units of variable input in a coal-production process are 1, 2, 3, 4, and 5, and the corresponding total outputs per period are 10, 15, 19, 22, and 24 tons, respectively.The marginal product of the third unit of input is _______ tons per period.
A) 3
B) 4
C) 15
D) 19
Correct Answer:

Verified
Correct Answer:
Verified
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