Question 1 of 100

List all the common factors of 42 and 84.

A
1, 2, 3, 6, 8, 14, 21, 42
B
1, 2, 3, 6, 7, 14, 21, 42
C
1, 2, 6, 7, 14, 21, 42
D
1, 3, 6, 7, 10, 14, 21, 42