A owes money to B under a contract The old debt of A to B is at an end It is agreed between A B and ...........

A owes money to B under a contract. The old debt of A to B is at an end. It is agreed between A, B and C, that B shall thenceforth accept C as his debtor instead of A.

New debt from C to B has been contracted

New debt from A to C has been contracted