78, 82, 91, 75, 76, 86, 90, 88, 70, 72A student was absent on the day of the quiz and scored a 50 on the make-up quiz. Whatis the approximate difference in the class' mean score before and after the make-up quiz?A. 3 pointsB. 4 pointsC. 5 pointsD. 6 points