Junko's Car Dealership Has Been Suffering from Dust on the Cars

Multiple Choice

Junko's car dealership has been suffering from dust on the cars in its lot ever since Mak opened his bakery nearby. The bakery's flour deliveries send waves of dust down the block. Junko offers to cover half of the cost of Mak adding a shelter for his delivery area to reduce the blowing of flour dust toward the dealership. This is an example of reducing a negative externality through:

A) rules and regulations.
B) private bargaining.
C) cap and trade.
D) corrective taxes and subsidies.