Use the Following to Answer Questions -(Exhibit: Total Cost for a Perfectly Competitive Firm)If the Market

Multiple Choice

Use the following to answer questions $$\begin{array}{l}\text { Total Cost for a Perfectly Competitive Firm }\\\\\begin{array} { c c } \begin{array} { cc } \text { Quantity } \\\text { per } &\end{array} & \text { Total } \\\text { period }&\text { Cost } \\0 & \$ 10 \\1 & \$ 16 \\2 & \$ 20 \\3 & \$ 22 \\4 & \$ 24 \\5 & \$ 25 \\6 & \$ 27 \\7 & \$ 30 \\8 & \$ 34 \\9 & \$ 39 \\10 & \$ 45\end{array}\end{array}$$
-(Exhibit: Total Cost for a Perfectly Competitive Firm) If the market price is $4.50, profit at the profit-maximizing quantity of output is:

A) $2.00.
B) $4.50.
C) $5.00.
D) $34.00.