Refer to the Graph Shown

Refer to the graph shown. Assume the market is initially in equilibrium at point b in the graph but the imposition of a per-unit tax on this product shifts the supply curve up from S₀ to S₁. The amount of revenue government will collect from this tax is equal to the:

A) amount of the per-unit tax multiplied by Q₁.
B) amount of the per-unit tax multiplied by Q₂.
C) area of the triangle abc.
D) area of the triangle bcd.