Use the Figure Below to Answer the Following Questions

Multiple Choice

Use the figure below to answer the following questions.
Figure 16.2.1
-Refer to Figure 16.2.1.The figure shows the private marginal cost curve,the social marginal cost curve and the market demand curve.If a constant per unit tax is imposed that generates an efficient allocation of resources,then consumers pay a per unit price of

A) zero.
B) P₁.
C) P₂.
D) P₃.
E) P₄.