(Table: Labor and Output for Cappuccinos) Use Table: Labor and Output

(Table: Labor and Output for Cappuccinos) Use Table: Labor and Output for Cappuccinos. The marginal product of labor for the sixth worker is: $${ \begin{array} { l } \text { Table: Labor and Output for } \\\text { Cappuccinos }\end{array} } \\\begin{array} { | l | l | } \hline \begin{array} { l } \text { Quantity of } \\\text { Labor }\end{array} & \begin{array} { l } \text { Number of } \\\text { Cappuccinos }\end{array} \\\hline 0 & 0 \\\hline 1 & 12 \\\hline 2 & 22 \\\hline 3 & 30 \\\hline 4 & 36 \\\hline 5 & 40 \\\hline 6 & 43 \\\hline 7 & 44 \\\hline\end{array}$$

A) 9.
B) 3.
C) 10.
D) 6.