Which list shows all the factor pairs of 30?
A. 1 and 30, 2 and 15, 3 and 10, 5 and 6
B. 1 and 30, 2 and 15, 3 and 10, 4 and 9, 5 and 6
C. 1 and 30, 2 and 15, 3 and 10, 4 and 8, 5 and 6
D. 1 and 30, 2 and 15, 3 and 10, 5 and 8