Which list shows all the factors of 36?
Select one:
a. 36, 72, 108, 144, 180
b. 1, 2, 3, 4, 6, 9, 12, 18, 36
c. 1, 2, 3, 4, 6, 12, 18, 36
d. 1, 2, 3, 4, 5, 9, 12, 18, 36