Refer to the Following -In the Table Above, How Much Does the Third Unit

Multiple Choice

Refer to the following:
$$\begin{array} { c c c c } \begin{array} { c } \text { Units } \\\text { of Labor }\end{array} & \begin{array} { c } \text { Totel } \\\text { Praduet }\end{array} & \begin{array} { c } \text { Average } \\\text { Product }\end{array} & \begin{array} { c } \text { Narginal } \\\text { Produet }\end{array} \\\hline 1 & - & - & 100 \\2 & - & 125 & - \\3 & 300 & - & - \\4 & - & - & 20\\5&290&-&-\end{array}$$
-In the table above, how much does the third unit of labor ADD to total output?

A) 100
B) 125
C) 150
D) 300
E) none of the above