The ages and grades of some of the 19 girls on a club soccer team are shown in the table.
15 years old
16 years old
2.
0
9th grade
10th grade
10
Which two-way frequency table correctly shows the marginal frequencies?
15 years
16 years
Total
old
old
A.
2.
0
2.
9th grade
10th grade
Total
9
10
19
11
10
21
16 years
15 years
old
Total
B.
old