Under a viidable contract avoiding legal obligations

5. If a contractual performance becomes illegal after the offer has been accepted but before the performance has been rendered, the offer is terminated. MULTIPLE CHOICE 6. Informal contracts include A. Letters of credit C. Both A and B B. Negotiable instruments D. Neither A nor B Fred and Ethyl sign a contract in which Fred agrees to deliver heating oil in exchange for Ethyl's promise to pay for the oil. Fred delivers the oil. The contract is 7. A. Fully executed B. Executory with respect to Fred. C. Executory with respect to Ethyl. D. Unexecuted