(Table: Total Product and Marginal Product for Energy Drinks) Use

(Table: Total Product and Marginal Product for Energy Drinks) Use Table: Total Product and Marginal Product for Energy Drinks. The marginal product of labor for the seventh worker is _____ units per period. $$\text { Table: Total Product and Marginal Product for Energy Drinks } \\\begin{array} { | l | l | } \hline \text { Labor per Day } & \text { Number of Energy Drinks (per period) } \\\hline 0 & 0 \\\hline 1 & 10 \\\hline 2 & 30 \\\hline 3 & 70 \\\hline 4 & 90 \\\hline 5 & 100 \\\hline 6 & 107 \\\hline 7 & 110 \\\hline 8 & 105 \\\hline\end{array}$$

A) 10
B) 7
C) 12
D) 3