When a Firm Uses Inputs in a Fixed Proportion, the Cost

Multiple Choice

When a firm uses inputs in a fixed proportion, the cost minimizing combination of capital and labor

A) occurs when the firm uses either all workers or all machines.
B) occurs when the firm uses equal amounts of workers and machines.
C) occurs where the ratio of the marginal productivities equals the ratio of the input prices.
D) occurs at the corner point on the isoquant.