Robert and Sandra live in the same apartment building.$$ Robert enjoys playing electronic dance music very loudly.$$ Sandra, who can hear it clearly, hates electronic dance music.$$ Robert enjoys $$300$ worth of benefits from listening to his music, while Sandra suffers $$400$ worth of damages.$$ Assume Robert and Sandra can bargain at zero cost.$$ Suppose Robert cannot play his music if any neighbors object according to the rules of the apartment community.$$ Which of the following is a feasible bargaining solution?

Question $22$ options:

Sandra pays Robert $$300$ to not play his music

Robert pays Sandra $$300$ for her to allow him to play his music

Robert pays Sandra $$400$ for her to allow him to play his music

None of the above