What is pledge:

• A. The bailment of goods as security for payment of a debt or performance of a promise
• B. The delivery of goods by one person to another for some purpose, upon a contract that they shall, when the purpose is accomplished, be returned or otherwise disposed of according to the direction of the person delivering them
• C. A contract by which one party promises to save the other from loss caused to him by the contract of the promisor himself, or by the conduct of any other person
• D. A contract to do or not to do something, if some event, collateral to such contract, does or does not happen