Suppose the marginal cost of a piece of candy is given by MCc = 2Qc and the marginal cost of a desk is MCd = 4 + 4Qd. The current production levels are 20 pieces of candy and 4 desks. The marginal rate of transformation (MRT) is
A) MRT = -1.
B) MRT = -2.
C) MRT = -4.
D) MRT = -8.
ANSWER
B
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