Provide an Appropriate Response

Multiple Choice

Provide an appropriate response.
-The total cost in dollars of producing x lawn mowers is given by C Find the marginal average cost at and interpret the result.

A) -$13.33; a unit increase in production will decrease the average cost per unit by approximately $13.33 at a production level of 20 units.
B) -$1.33; a unit increase in production will decrease the average cost per unit by approximately $1.33 at a production level of 20 units.
C) -$10.33; a unit increase in production will decrease the average cost per unit by approximately $10.33 at a production level of 20 units.
D) -$20.33; a unit increase in production will decrease the average cost per unit by approximately $20.33 at a production level of 20 units.