Table 13-3
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-Refer to Table 13-3

Multiple Choice

Table 13-3
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$$\begin{array} { | c | c | c | c | c | } \hline \begin{array} { c } \text { Labor } \\\text { (Number of workers) }\end{array} & \begin{array} { c } \text { Output } \\\text { (Units) }\end{array} & \begin{array} { c } \text { Fixed Cost } \\\text { (Dollars) }\end{array} & \begin{array} { c } \text { Variable Cost } \\\text { (Dollars) }\end{array} & \begin{array} { c } \text { Total Cost } \\\text { (Dollars) }\end{array} \\\hline 0 & 0 & 50 & 0 & 50 \\\hline 1 & 90 & 50 & 20 & 70 \\\hline 2 & 170 & 50 & 40 & 90 \\\hline 3 & 230 & 50 & 60 & 110 \\\hline 4 & 240 & 50 & 80 & 130 \\\hline\end{array}$$ ​
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-Refer to Table 13-3. The marginal product of the second worker is

A) 90 units.
B) 85 units.
C) 80 units.
D) 20 units.