Quito Contracts with Rewind Graphix,Inc

Multiple Choice

Quito contracts with Rewind Graphix,Inc.,to pay $5,000 for its work on the animated film "Song." After Rewind performs,they sign an accord,in which Quito promises to pay $4,000 within ten days instead of $5,000 later.But Quito does not pay.Rewind can sue Quito

A) under no circumstances.
B) on the accord only.
C) on the accord or the original obligation.
D) on the original obligation only.