Which list shows all the factor pairs of 32?
A.
1 and 32, 2 and 16, 4 and 8
B.
1 and 32, 2 and 16, 4 and 8, 6 and 6
C.
1 and 32, 2 and 16, 4 and 9
D.
1 and 32, 2 and 16, 4 and 8, 6 and 7