A cubic cost function implies:

A) a U-shaped average variable cost curve.
B) a U-shaped marginal cost curve.
C) a U-shaped average cost curve.
D) all of the above

Cubic Cost Function

A representation of cost as a cubic function of output, allowing for more complex cost behavior including economies and diseconomies of scale.

Average Variable Cost Curve

A graphical representation showing how the average variable cost of production changes with the quantity of output produced.

Marginal Cost Curve

A curve that illustrates the change in total cost that arises when the quantity produced changes by one unit, typically upward sloping due to increasing marginal cost.