Most of the students who took Spanish 101 at the university last semester attended every class session. However, each student who received a grade lower than B minus missed at least one class session. Which one of the following statements about the students who took Spanish 101 at the university last semester can be properly inferred from the information above? ['Most, if not all, of the students who missed at least one class session received a grade lower than B minus.', 'At least some of the students who received a grade of A minus or higher attended every class session.', 'More than half of the students received a grade of B minus or higher.', 'Most of the students received a grade higher than B minus.']