1. If the average variable cost of a firm is falling, then the:

Group of answer choices

average fixed cost must be rising.

A.marginal cost must be falling.

B marginal cost must be rising.

C marginal cost lies below the average variable cost.

D marginal cost lies above the average variable cost.

The table given below shows the average total cost of production of a firm at different levels of the output. Table 8.5 Quantity Average Total Cost $10 2 $6 13 $5 14 $5 15 $7 In Table 8.5, what is the total cost of producing 4 units? O $28 O $10 O $15 O $20 O $35