Graph 13-5 the Set of Curves Above Reflect Information

Multiple Choice

Graph 13-5 The set of curves above reflect information about the cost structure of a firm.Use this graph to answer the following question(s) .
-Refer to Graph 13-5.Curve A is necessarily U-shaped because of:

A) diminishing marginal product
B) increasing marginal product
C) the fact that decreasing marginal product follows increasing marginal product
D) the fact that increasing marginal product follows decreasing marginal product