Answer the Question on the Basis of the Provided Demand $\quad$

Answer the question on the basis of the provided demand and cost data for a pure monopolist. $\quad$$\quad$$\quad$$\quad$ $\text { Cost Data }$ $\quad$$\quad$$\quad$ $\text { Demand Data }$
$\begin{array} { | c | c | c | c| } \hline \text { Price } & \begin{array} { c } \text { Quartity } \\\text { Dernarded }\end{array} & \text { Output } & \text { Total Cost } \\\hline 55.50 & 3 & 3 & \$ 5.01 \\\hline 5.84 & 4 & 4 & 6.01 \\\hline 4.50 & 5 & 5 & 6.50 \\\hline 3.85 & 6 & 6 & 7.50 \\\hline 3.35 & 7 & 7 & 9.01 \\\hline 2.90 & 8 & 8 & 11.81 \\\hline 2.50 & 9 & 9 & 14.81 \\\hline\end{array}$ The profit-maximizing level of output will be

A) 4 units.
B) 7 units.
C) 6 units.
D) 5 units.