-When 2 Units of Labor Are Used,output Is
A)5

Multiple Choice

$$\begin{array} { c c } & \begin{array} { c } \text { Marginal Physical }\end{array} \\\text { Units of Labor } & \text { Product of Labor } \\1 & 5 \\2 & 8 \\3 & 10 \\4 & 8 \\5 & 5 \\6 & 2 \\7 & - 1\end{array}$$
-When 2 units of labor are used,output is

A) 5.
B) 8.
C) 10.
D) 13.
E) 23.