In Which Case Is the Coase Theorem Most Likely to Work

Multiple Choice

In which case is the Coase theorem most likely to work to solve an externality

A) Richard is annoyed because his roommate smokes.
B) Chemicals from farms in the Mississippi Valley are polluting the Gulf of Mexico.
C) Car exhaust in a small town is making one of its residents ill.
D) Industrialization around the world is causing global warming.