Refer to the Table Shown If the Price Per Unit of Product Is $2, the c

Refer to the table shown. $$\begin{array}{l}\begin{array} { | c | c | } \hline \text { Number wf Warkers } & \text { Tatal Praduct per Huur }\\\hline 1 & 24 \\\hline 2 & 44 \\\hline 3 & 60 \\\hline 4 & 74 \\\hline 5 & 84 \\\hline 6 & 90 \\\hline 7 & 92 \\\hline\end{array}\end{array}$$ If the price per unit of product is $2, the marginal revenue product of the fourth worker is:

A) 14.
B) 28.
C) 32.
D) 40.