Question 1 of 100

List all the common factors of 30 and 90.

A
1, 2, 3, 5, 10, 15, 30
B
1, 2, 3, 5, 6, 10, 15, 30
C
1, 2, 3, 5, 6, 7, 15, 30
D
1, 2, 3, 5, 6, 8, 10, 30