Yolef and Stacia Enter into a Contract for Stacia to Cook

Multiple Choice

Yolef and Stacia enter into a contract for Stacia to cook a meal for Yolef and Yolef to pay Stacia $50. Yolef shows up at Stacia's house with $100 and hands it to Stacia. Stacia refuses to accept the money. Yolef has:

A) Discharged his duties under the contract.
B) Performed subject to satisfaction of a contracting party.
C) Substantially performed his duties.
D) Breached the contract.
E) Not yet performed his duties under the contract.