The Figure Below Depicts a Production Function for a Firm

Multiple Choice

The figure below depicts a production function for a firm that produces cookies.
Figure 12-4
-Refer to Figure 12-4. As the number of workers increases,

A) total output increases, but at a decreasing rate.
B) marginal product increases, but at a decreasing rate.
C) marginal product increases at an increasing rate.
D) total output decreases.