Which of the following integers is NOT a divisor of x if x = (21)(3^7) + (23)?	Choose the correct choice from the following answers:
A) 2
B) 5
C) 9
D) 10
E) 25
(21)(3^7) is divisible by 3 but 23 is not divisible by 3.   Therefore (21)(3^7) + 23 is not divisible by 3 and thus not divisible by 9.   The answer is 9.
<result>C</result>
Which of the following integers is NOT a divisor of x if x = (21)(3^7) + (23)?