Table 141 -Refer to Table 14

Table 14.1
$\begin{array}{|c|c|}\hline \begin{array}{c}\text { Quantity of } \\\text { labour }\end{array} & \text { Output (units) } \\\hline 1 & 80 \\\hline 2 & 170 \\\hline 3 & 240 \\\hline 4 & 300 \\\hline 5 & 350 \\\hline 6 & 390 \\\hline 7 & 420 \\\hline\end{array}$
-Refer to Table 14.1.If the output price is $3, what is the marginal revenue product of the fifth unit of labour?

A) $1,050
B) $360
C) $210
D) $150