Suppose That the Market for Cigarettes Is Initially in Equilibrium $P = 60 - Q ^ { d }$

Multiple Choice

Suppose that the market for cigarettes is initially in equilibrium and is perfectly competitive. The demand curve can be expressed as $P = 60 - Q ^ { d }$ ; the supply curve can be expressed as $P =$ $0.5 Q ^ { s }$ . Quantity is expressed in millions of boxes per month. Now suppose that the federal government imposes a production quota on cigarettes of 30 million boxes per month. What is the change in producer surplus (per million boxes) associated with the quota?

A) $\$ 175$
B) $\$ 75$
C) $\$ 50$
D) $\$ 25$