In the Accompanying Table, Diminishing Marginal Product Begins After The $\begin{array}{r}\text { input }&\text { Total Product }\\0&0\\1&10\\2&35\\3&70\\4&120\\5&165\\5&175\\7&170\\8&155\end{array}$

In the accompanying table, diminishing marginal product begins after the: $\begin{array}{r}\text { input }&\text { Total Product }\\0&0\\1&10\\2&35\\3&70\\4&120\\5&165\\5&175\\7&170\\8&155\end{array}$

A) first unit of input.
B) second unit of input.
C) seventh unit of input.
D) fourth unit of input.
E) sixth unit of input.