If the Average Variable Cost of Producing 10 Units Is

Multiple Choice

If the average variable cost of producing 10 units is $18 and the average variable cost of producing 11 units is $20, we know that, between 10 and 11 units of output,

A) marginal cost is increasing.
B) average total cost is increasing.
C) average fixed cost is increasing.
D) total cost is either increasing or decreasing.
E) none of the above