In the Following Figure, the First Panel Shows a Market

In the following figure, the first panel shows a market situation prior to regulation and the second panel shows the effects of regulation. Figure 26.2 In the figure,
D: Demand curve for automobiles
S₁: Supply curve of automobiles prior to regulation
S₂: Supply curve of automobiles after regulation
FG: Clean up cost per unit
According to Figure 26.2, the total clean up cost after the regulation is:

A) area 0FIQ₂.
B) area 0FGQ₁.
C) area BEC.
D) area BEP₁.
E) area BEGF.