Total Cost Schedule for a Competitive Firm If Market Price Is $30,how Many Units of Output Will

Total cost schedule for a competitive firm: $$\begin{array} { c c } \text { Output } & \text { Tatal Cost } \\\hline 0 & \$ 10 \\1 & 60 \\2 & 80 \\3 & 110 \\4 & 165 \\5 & 245 \\\hline\end{array}$$ If market price is $30,how many units of output will the firm produce?

A) 0,the firm shuts down
B) 1
C) 2
D) 3
E) 4