Suppose two neighbors share a park. One neighbor, Al, leaves trash in the park. This bothers the other neighbor, Bert. According to Coase's Theorem, the optimal level of trash in the park can be achieved if A. Al has the right to leave trash and Bert can pay him to limit his dumping. B. Al has the right to leave trash and Bert cannot do anything about it. C. Bert moves. D. Al is fined by the government.