A doctor driving on a highway stops at a car accident to give medical aid that takes an hour of time. The accident victim is unconscious when the doctor arrives, so he does not give his consent to the aid. The doctor bills the victim for an hour of medical services: O a quasi-contract existed, otherwise the victim would be unjustly enriched an executed contract existed: the victim pays this was an adhesion contract: no payment O an express contract existed; the victim pays O a valid contract, enforceable by law, was not created; no payment