Use the Following to Answer Questions: Table: Excellence Publishing -(Table: Excellence Publishing) Refer to the Table

Use the following to answer questions: Table: Excellence Publishing $$\begin{array} { | c | c | } \hline \text { Number of Workers Per Year } & \text { Number of Books Edited Per Year } \\\hline 4 & 16,000 \\\hline 5 & 19,000 \\\hline 6 & 21,200 \\\hline 7 & 22,800 \\\hline 8 & 23,700 \\\hline 9 & 24,200 \\\hline\end{array}$$
-(Table: Excellence Publishing) Refer to the table. Each edited book sells for $50. What is the marginal product of labor for the sixth worker?

A) $21,200
B) $110,000
C) $45,000
D) $2,200