The Figure Above Shows a Firm's Average Total Cost and Marginal

Multiple Choice

The figure above shows a firm's average total cost and marginal cost curves.
-Based on the figure above,the firm's marginal product curve slopes upward at levels of output between ________ and the firm's average product curve slopes upward at levels of output between ________.

A) 4.0 and 7.0; 4.0 and 7.0
B) 0 and 7.0; 4.0 and 7.0
C) 4.0 and 7.0; 0 and 4.0
D) 0 and 4.0; 0 and 7.0
E) More information is needed to answer the question.