Table 85 -Refer to Table 8

Table 8.5
$$\begin{array} { | c | c | c | } \hline \begin{array} { c } \text { Quantity } \\\text { of Output }\end{array} & \begin{array} { c } \text { Total } \\\text { Revenue } ( \$ ) \end{array} & \begin{array} { c } \text { Total } \\\text { Cost } ( \$ ) \end{array} \\\hline 0 & 0 & 50 \\\hline 10 & 50 & 70 \\\hline 20 & 100 & 90 \\\hline 30 & 150 & 120 \\\hline 40 & 200 & 200 \\\hline 50 & 250 & 325 \\\hline\end{array}$$
-Refer to Table 8.5,which shows the output supplied by a firm,its total revenue,and its total cost of production.It represents a firm in the _____

A) long run, because there is no fixed cost.
B) short run, because there is no equilibrium.
C) long run, because there is an equilibrium level of output.
D) short run, because a firm incurs fixed cost.
E) long run, because there is a normal profit.