Farmer brown goes to the city and contracts to deliver the general grain co., "10,000 bushels of corn". storms destroy farmer brown's corn crop back at his farm the same night. can farmer brown be excused from the contract?

a. no, as it was implied that brown would deliver from his own crop

b. yes, the contract is discharged by impossibility

c. no, since brown did not add the commercial impracticability clause in the contract

d. yes, since the contract was not specific in the location of the corn