Diminishing returns to physical capital means that when the amount of human capital per worker and the state of technology are held fixed, each increase in the amount of physical capital per worker leads to:
a. a smaller increase in the marginal product of labor.
b. a decrease in the total amount of output.
c. negative marginal product.
d. a constant amount of total output.

Afirm plans to begin production of a new small appliance. the manager must decide whether to purchase the motors for the appliance from a vendor at $10 each or to produce them in-house. either of two processes could be used for in-house production; process a would have an annual fixed cost of $200,000 and a variable cost of $7 per unit, and process b would have an annual fixed cost of $175,000 and a variable cost of $8 per unit. determine the range of annual volume for which each of the alternatives would be best. (round your first answer to the nearest whole number. include the indifference value itself in this answer.)