For the Following Output Data, Assume That the Amounts of All

For the following output data, assume that the amounts of all nonlabour resources are fixed

$\begin{array} { | l | c | c | c | c | c | c | c | } \hline & \mathrm { A } & \mathrm { B } & \mathrm { C } & \mathrm { D } & \mathrm { E } & \mathrm { F } & \mathrm { G } \\\hline \text { Number of Workers } & 0 & 1 & 2 & 3 & 4 & 5 & 6 \\\hline \text { Outputs (units) } & 0 & 40 & 90 & 126 & 150 & 165 & 174 \\\hline\end{array}$
-The law of diminishing marginal returns becomes evident with the addition of the:

A) fifth worker
B) fourth worker
C) third worker
D) second worker
E) first worker