Out the Table and Answer the Question Below The Average Product of Labor When 4 Units of Labor

Multiple Choice

out the table and answer the question below. $\begin{array}{c}\begin{array}{c}\text {Units of}\\\text {Labor}\\\hline1 \\2 \\3 \\4 \\5 \\6 \\7\end{array}\begin{array}{c}\text { Total }\\\text { Product }\\\hline ---\\---\\66\\---\\---\\78\\---\end{array}\begin{array}{c}\text {Average}\\\text {Product}\\\hline20\\---\\---\\---\\16\\---\\10\end{array}\begin{array}{c}\text {Marginal}\\ \text {Product}\\\hline---\\30\\---\\10\\---\\---\\---\\\end{array}\end{array}$

The average product of labor when 4 units of labor are employed is

A) 22.
B) 20.
C) 19.
D) 16.