A Producer of Two Fixed Proportion Outputs a and B,producing

Multiple Choice

A producer of two fixed proportion outputs A and B,producing Q_A = Q_B with marginal revenues MR_A and MR_B,should equate marginal cost to:

A) the maximum (MR_A, MR_B) .
B) the minimum (MR_A, MR_B) .
C) MR_A, which should equal MR_B.
D) the horizontal sum of MR_A and MR_B.
E) the vertical sum of MR_A and MR_B.