Recently, many medical students have been enrolling in joint M. D. /J. D. programs, in which they receive both medical and law degrees at the conclusion of their studies. But since medical students primarily earn their law degree in order to protect themselves from malpractice lawsuits as doctors, we must still conclude that they are primarily doctors, and not lawyers. Which of the following is an assumption that supports drawing the conclusion above from the reason given? ['Some students who complete such joint programs choose to become lawyers in fields in which they do not use their medical training, while those who choose to become doctors do use legal training.', 'If such joint degrees required that students focus more on their legal studies than their medical studies, students could be considered lawyers after graduation.', 'Certain recipients of these joint degrees are not any less diligent than others in the legal courses that they take, with notable exceptions.', 'A person cannot be considered a lawyer if he or she received a law degree for purposes other than practicing the law.']