Bob and Tom live in a university dorm. Bob values playing load music at a value of $100. Tom values people and quiet at a value of $150. Which of the following statements is true?
a. It is efficient for Bob to continue to play loud music
b. It is efficient for Bob to stop playing loud music only if Tom as the property right to peace and quiet.
c. It is efficient for Bob to stop playing loud music only if Bob has the property right to play loud music.
d. It is efficient for Bob to stop playing loud musical regardless of who has the property right to the level of sound.
