Task: Question Answering
Input (English): Question: x, y, a, and b are positive integers. When x is divided by y, the remainder is 6. When a is divided by b, the remainder is 14. Which of the following is NOT a possible value for y + b?

 Option A: 24

 Option B: 21

 Option C: 20

 Option D: 17

 Option E: 15
Output (English): Option C