The correct option is C It ceases to operate.
When parties enter into a contract, each has rights and duties that are spelled out in the agreement. When the sides perform their rights and duties, the contract is then discharged. In these cases, discharge of contract refers to an agreement that's fully performed. This means the contractual relationship is now terminated and contract now ceases to operate . However, parties can terminate an agreement even if they don't fulfill their primary contractual obligations.