Medi-waste Disposal Company enters into a contract with Travis Veterinary Hospital to provide medical waste collection and disposal services for $500 a month to begin one month from the date of the agreement. Before Medi-waste begins collection and disposal service for Travis, a law goes into effect requiring additional environmental containment measures that will add a significant cost to disposing of medical waste. Medi-waste tells Travis that due to the added cost it will not perform the waste collection and disposal services. Medi-waste's contractual obligation to Travis is
A. discharged.
B. suspended.
C. rescinded.
D. breached.