HELP NEEDED
The number of schools that purchased a certain program changed by a factor of three for five consecutive years. Which list could represent the number of schools that purchased this program?
A 14, 28, 42, 56, 7014, 28, 42, 56, 70
B 14, 42, 126, 378, 113414, 42, 126, 378, 1134
C 3, 6, 9, 12, 153, 6, 9, 12, 15
D 8, 32, 96, 384, 1152