For the multiproduct cost function C(Q1, Q2) = 100 + 2Q1Q2 + 4Q12, what is the marginal cost function for good one?
A. MC1 = 2Q2 + 4Q1 ? Q22.
B. MC1 = 4Q2 + 6Q1.
C. MC1 = 2Q2 + 8Q1.
D. MC1 = 100 + 2Q1Q2 + 4Q12.
Answer: C
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