Refer to the Following:
the Amount of Total Output Produced

Multiple Choice

Refer to the following:
The amount of total output produced from various combinations of labor and capital.

$$\begin{array}{l}     \text { Units of Capital }\\\begin{array} { c c c c c c } & & 1 & 2 & 3 & 4 \\\hline \text { Units } & 1 & 20 & 36 & 48 & 53 \\\text { of } & 2 & 38 & 68 & 88 & 94 \\\text { Iabor } & 3 & 53 & 94 & 122 & 133 \\& 4& 63 & 112 & 148 & 164 \\& 5 & 68 & 120 & 164 & 184\end{array}\end{array}$$
-If capital is fixed at three units, how much does the fourth unit of labor add to total output?

A) 16
B) 28
C) 34
D) 36
E) none of the above