If the remainder is 10 when the integer n is divided by 18, what is the remainder when 2n is divided by 9?  Choose the correct option:
A) 0  B) 1  C) 2  D) 3  E) 4
n = 18k+10   2n = 2(18k+10) = 4k*9 + 20 = 4k*9 + 2*9 + 2 = 9j + 2   The answer is 2.
<result>C</result>
If the remainder is 10 when the integer n is divided by 18, what is the remainder when 2n is divided by 9?