Ethicist: Both ASA and TPA are clot-dissolving agents. Recent studies show that the more expensive agent, TPA, would save at most two more lives than would ASA out of every 50 cardiac patients to whom they are postoperatively administered. However, since the relatives of the patients who die simply because they were given the less expensive medicine would be particularly grieved, the financial saving involved in using ASA over TPA must also be weighed against such considerations. Which one of the following most accurately expresses the conclusion of the ethicist's argument? ['TPA is a slightly more effective clot-dissolving agent than ASA.', 'Relatives of a patient who has died grieve more if the patient received ASA rather than TPA.', 'The extra expense of TPA cannot be weighed simply against the few additional lives saved.', 'ASA should never be given to postoperative cardiac patients in place of TPA.']