In the long run
A) all inputs are fixed.
B) a firm is making the optimal input choice when the marginal rate of technical substitution is equal to the input price ratio.
C) the expansion path shows how the input marginal products change as the firm's output level changes.
D) both a and b
E) none of the above

Question

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The Answer of In the long run
A) all inputs are fixed.
B) a firm is making the optimal input choice when the marginal rate of technical substitution is equal to the input price ratio.
C) the expansion path shows how the input marginal products change as the firm's output level changes.
D) both a and b
E) none of the above

In the Long Run