-Based on the Table Above, Holding Capital Constant at 3

Multiple Choice

$$\begin{array} { | l | l | l | l | l | l | } \hline & \mathrm { K } = 0 & \mathrm {~K} = 1 & \mathrm {~K} = 2 & \mathrm {~K} = 3 & \mathrm {~K} = 4 \\\hline \mathrm { L } = 0 & 0 & 0 & 0 & 0 & 0 \\\hline \mathrm { L } = 1 & 0 & 1 & 2 & 3 & 4 \\\hline \mathrm { L } = 2 & 0 & 8 & 16 & 24 & 32 \\\hline \mathrm { L } = 3 & 0 & 27 & 54 & 81 & 108 \\\hline \mathrm { L } = 4 & 0 & 64 & 128 & 192 & 256 \\\hline\end{array}$$
-Based on the table above, holding capital constant at 3 units, the marginal productivity of the second laborer is

A) 8.
B) 12.
C) 21.
D) 24.