Please answer the following question for finite math showing all work:

9) Student A earned the following course grades during his freshman year: 4, 4, 4, 3, 3, 3, 3, 3, 2, 2. Student B earned the following course grades during his 'eshman year: 4, 4, 3, 3, 3, 2,1,1, 0, 0. (a) (7 points) Compute the means and variances for each student. (b) (7 points) Which student has the better grade point average? (c) (7 points) Which student was more consistent? Explain