(Table) Based on the Table, the Optimal Quantity for Pollution

(Table) Based on the table, the optimal quantity for pollution abatement is
$\begin{array}{l}\begin{array}{|c|c|c|}\hline \text { Quantity of Pollution }\\\text { Abatement } & \text { Marginal Cost } & \text { Marginal Benefits } \\\hline 1,000 & 150,000 & 550,000 \\\hline 1,500 & 200,000 & 400,000 \\\hline 2,000 & 300,000 & 300,000 \\\hline 2,500 & 450,000 & 150,000 \\\hline\end{array}\end{array}$

A) 1,000.
B) 1,500.
C) 2,000.
D) 3,000.