Correct Answer: C
Explanation:
The sum of r consecutive positive integers will always be divisible by 2 if r is a multiple of
1. odd + even = odd --- sum of two consecutive numbers is always odd
2. odd + even + odd = even OR even + odd + even = odd --- sum of three consecutive numbers may be even or odd
3. odd + even + odd + even = even OR even + odd + even + odd = even --- sum of four consecutive must be even.
The value of r = 4