Exhibit 7-1 Production of Pizza Data -Exhibit 7-1 Shows the Change in the Production of Pizzas

Exhibit 7-1 Production of pizza data $$\begin{array} { | c | c | } \hline \text { Workers } & \text { Pizzas } \\\hline 0 & 0 \\1 & 4 \\2 & 10 \\3 & 15 \\4 & 18 \\5 & 19 \\\hline\end{array}$$
-Exhibit 7-1 shows the change in the production of pizzas as more workers are hired. The total output of pizzas after hiring 4 workers is:

A) 4.
B) 15.
C) 18.
D) 3.
E) 1.