Use the Following to Answer Questions -(Table: TC's Pizza Parlour)Use Table: TC's Pizza Parlour

Use the following to answer questions : $$\begin{array}{l}\text { Table: TC's Pizza Parlor }\\\begin{array} { c c c } \hline \begin{array} { l } \text { Slices } \\\text { of Pizza }\end{array} & \text { Total Costs } & \text { Total Benefits } \\\hline 0 & \$ 10 & \$ 0 \\5 & 20 & 40 \\10 & 30 & 55 \\15 & 40 & 65 \\20 & 50 & 70 \\\hline\end{array}\end{array}$$
-(Table: TC's Pizza Parlour) Use Table: TC's Pizza Parlour.Assume that marginal cost is constant in the intervals of production.The marginal cost for pizza production:

A) remains constant.
B) increases,then decreases.
C) increases.
D) decreases.