When positive integer n is divided by 3, the remainder is 1. When n is divided by 5, the remainder is 3. What is the smallest positive integer k such that k+n is a multiple of 15?  Choose the correct choice from the following answers
A) 2 B) 4 C) 6 D) 8 E) 10
n = 3p + 1 = 5q + 3   n+2 = 3p + 3 = 5q + 5   n+2 is a multiple of 3 and 5, so it is a multiple of 15.   The answer is 2.
<result>A</result>
When positive integer n is divided by 3, the remainder is 1. When n is divided by 5, the remainder is 3. What is the smallest positive integer k such that k+n is a multiple of 15?