Which of the Following Is True

Which of the following is true?

A) A seller's duty to sell goods is discharged due to impossibility if the seller is unable to acquire the goods from its normal supplier.
B) If a contract can be performed,but doing so has become illegal,performance will be discharged on the basis of impossibility.
C) Death of a party will always result in discharge of that party's duties.
D) A party can get out of a contract by destroying the subject matter of the contract.