-In the Above Figure,market Equilibrium at Point E Yields the Quantity

Multiple Choice

-In the above figure,market equilibrium at point E yields the quantity X.The quantity $X ^ { * }$ is socially optimal amount.The government can achieve the optimal outcome by

A) setting the price at $P _ { 1 }$ .
B) establishing a tax of $\mathrm { P } _ { 3 }$ -
$P _ { 1 }$ per unit of the good sold.
C) establishing a tax of $\mathrm { P } _ { 3 }$ -
$P _ { 2 }$ per unit of the good sold.
D) setting the price at $\mathrm { P } _ { 4 }$ .