If we agree with David Hume's theory of causality, we shall also agree that... A. If a treatment works with every patient in a sample, it's empirically proven to work with all patients from that population, whether or not it logically should. B. If a treatment works with every patient in a sample, it's logically proven to work with all patients from that population, whether or not it empirically does. C. Treatments must be given to a sample of patients after the outcome measures are taken in order to prove beneficial cause and effect relationships in the population. D. Just because a treatment benefits all patients in a sample, the treatment's effectiveness with all other patients from the same population has not been logically proven