What Does It Mean If a Party to a Contract

Multiple Choice

What does it mean if a party to a contract has been discharged?

A) It means that person has been "let go" and has terminated the contract.
B) It means that person has "transferred" by assigning his or her duties to another party.
C) It means that person is "finished" and has no more duties under the contract.
D) It means that person has "delegated" and chosen to give up his or her contract rights.