PLS HELP MEE I NEED THUS REAL BADD!!! I'LL GIVE BRANLIESTT!!!

The Stem-and-Leaf plot shows the class average on the last math test. Select the true statement below.

7=2,8,8
8=2,4,4,8,8
9=2,2,4,6,8,8
10=0,0

A. The mean was 88.
B. The median was 90.
C. The range was 18.
D. The mode was 72.