3. Jones and Smith live in the same apartment building. Jones loves to play his opera recordings so loudly that Smith can hear them. Smith hates opera. Jones receives $100 worth of benefits from his music, and Smith suffers $60 worth of damages.

a. From an efficiency perspective, should Jones be allowed to play his opera music?

b. Suppose the apartment building does not have any rules about noise. Jones and Smith can bargain at zero cost. Will they reach an agreement where Jones gives up his beloved operas?

c. Now suppose the apartment building passes a rule that says residents are not allowed to play music their neighbors can hear if any of the neighbors object. As before, Jones and Smith can bargain at zero cost. Will Jones be allowed to play his music?