9.Suppose a firm is currently using capital (K) and labor (L) such that the marginal product of capital isMPK= 40 and the marginal product of labor isMPL= 20. If the rental price of capital isr= $20 and the wage rate isw= $10, then this firm

Group of answer choices

none of the other options.

is minimizing cost of its current level of production.

can reduce the cost of its current level of output by using a bit more L and a bit less K (in such a way to keep output constant).

can reduce the cost of its current level of output by using a bit more L and a bit more K.

can reduce the cost of its current level of output by using a bit more K and a bit less L (in such a way to keep output constant).