If this parking policy is unpopular with the faculty, then we should modify it. If it is unpopular among students, we should adopt a new policy. And, it is bound to be unpopular either with the faculty or among students. If the statements above are true, which one of the following must also be true? ['We should attempt to popularize this parking policy among either the faculty or students.', 'If the parking policy is popular among students, then we should adopt a new policy.', 'We should modify this parking policy if modification will not reduce its popularity with the faculty.', 'If this parking policy is popular with the faculty, then we should adopt a new policy.']