-The Maximum Number of Workers Hired Is
A)4

Multiple Choice

$\begin{array}{l}\text { Unit of}&\text { Output}&\text { Marginal }&\text {Price } &\text { Total } & \text { Marginal } \\\text { Labor}&&\text { Physical } &&\text { Revenue } & \text { Revenue } \\&&\text { Product } &&\text { Product } & \text { Product }\\1 & 10 && \$ 10 \\2 & 26 && 10 \\3 & 46 && 10 \\4 & 60 && 10 \\5 & 70 && 10 \\6 & 76 && 10 \\7 & 78 && 10 \\8 & 78 && 10\end{array}$
-The maximum number of workers hired is

A) 4.
B) 5.
C) 6.
D) 7.
E) 8.