(Table: Labor and Quantity of Output) The table shows the production function for a firm using a given amount of capital. If the price of the product is $15 each, which answer table would best represent the firm's value of the marginal revenue product of labor?

\begin{array}{|c|c|}\hline \text { Units of Labor } & \begin{array}{c}\text { Quantity of } \\\text { Output }\end{array} \\\hline 1 & 20 \\\hline 2 & 28 \\\hline 3 & 35 \\\hline 4 & 41 \\\hline 5 & 44 \\\hline 6 & 35 \\\hline\end{array}

\begin{array}{|c|c|c|}\hline \begin{array}{c}\text { Units of } \\\text { Labor }\end{array} & \begin{array}{c}\text { Quantity of } \\\text { Output }\end{array} & \begin{array}{c}\text { Marginal } \\\text { Revenue } \\\text { Product of } \\\text { Labor }\end{array} \\\hline 1 & 20 & 200 \\\hline 2 & 28 & 80 \\\hline 3 & 35 & 70 \\\hline 4 & 41 & 60 \\\hline 5 & 44 & 30 \\\hline 6 & 35 & -90 \\\hline\end{array}

\begin{array}{|c|c|c|}\hline \begin{array}{c}\text { Units of } \\\text { Labor }\end{array} & \begin{array}{c}\text { Quantity of } \\\text { Output }\end{array} & \begin{array}{c}\text { Marginal } \\\text { Revenue } \\\text { Product of } \\\text { Labor }\end{array} \\\hline 1 & 20 & 300 \\\hline 2 & 28 & 120 \\\hline 3 & 35 & 105 \\\hline 4 & 41 & 90 \\\hline 5 & 44 & 45 \\\hline 6 & 35 & -135 \\\hline\end{array}

\begin{array}{|c|c|c|}\hline \begin{array}{c}\text { Units of } \\\text { Labor }\end{array} & \begin{array}{c}\text { Quantity of } \\\text { Output }\end{array} & \begin{array}{c}\text { Marginal } \\\text { Revenue } \\\text { Product of } \\\text { Labor }\end{array} \\\hline 1 & 20 & 15 \\\hline 2 & 28 & 15 \\\hline 3 & 35 & 15 \\\hline 4 & 41 & 15 \\\hline 5 & 44 & 15 \\\hline 6 & 35 & 15 \\\hline\end{array}

\begin{array}{|c|c|c|}\hline \begin{array}{c}\text { Units of } \\\text { Labor }\end{array} & \begin{array}{c}\text { Quantity of } \\\text { Output }\end{array} & \begin{array}{c}\text { Marginal } \\\text { Revenue } \\\text { Product of } \\\text { Labor }\end{array} \\\hline 1 & 20 & 300 \\\hline 2 & 28 & 420 \\\hline 3 & 35 & 525 \\\hline 4 & 41 & 615 \\\hline 5 & 44 & 660 \\\hline 6 & 35 & 525 \\\hline\end{array}

Due to an Increase in the Market Wage Rate for Restaurant