(Table: Production of Bagels at the Bagel Factory) Use Table

(Table: Production of Bagels at The Bagel Factory) Use Table: Production of Bagels at The Bagel Factory. The marginal product of labor for the sixth worker is _____ bagels. $${ \text { Table: Production of Bagels at The Bagel Factory } } \\\begin{array} { | l | l | } \hline \text { Workers per Day } & \text { Dozens of Bagels per Day } \\\hline 0 & 0 \\\hline 1 & 5 \\\hline 2 & 15 \\\hline 3 & 30 \\\hline 4 & 42 \\\hline 5 & 51 \\\hline 6 & 57 \\\hline 7 & 60 \\\hline 8 & 50 \\\hline 9 & 57 \\\hline\end{array}$$

A) 6 dozen
B) 9 dozen
C) 7 dozen
D) 12 dozen