Renee contracts with Scott to pay him $25,000 for his work on Renee’s new album "Hip Pop." After Scott performs, they sign an accord, in which Renee promises to pay him $21,000 within thirty days instead of $25,000 later. But she does not pay.
Scott can sue Renee on:

A) the accord only.
B) the original obligation only.
C) the accord or the original obligation.
D) neither the accord nor the original obligation