Suppose Sarah Owns a Small Company That Makes Wedding Cakes

Multiple Choice

Suppose Sarah owns a small company that makes wedding cakes. The accompanying table shows how Sarah's total cost varies depending on the number of wedding cakes she makes each day. $$\begin{array} { | c | c | } \hline \text { Number of Cales Per Day } & \text { Tatal Cast Per Day } \\\hline 0 & \$ 100 \\\hline 1 & \$ 180 \\\hline 2 & \$ 220 \\\hline 3 & \$ 300 \\\hline 4 & \$ 400 \\\hline 5 & \$ 520 \\\hline 6 & \$ 660 \\\hline\end{array}$$  
If the market for wedding cakes is perfectly competitive, and wedding cakes sell for $125 each, then Sarah should produce ________ cakes per day.

A) 0
B) 3
C) 5
D) 6