1. Brendan contracted to install vinyl siding on Carol's dog house during the rst two weeks of August. When Brendan arrived on August 1 to begin the work, Carol told him that the job would have to be postponed for two months since her pet Pomeranians were expecting puppies. Brendan's obligation to perform the contract was discharged by A. tender of performance. B. operation of law. C. impossibility. D. Brendan's obligation has not been discharged