Task: Question Answering
Input (English): Question: The present ages of three persons in proportions 4 : 7 : 9. Eight years ago, the sum of their ages was 56. Find their present ages (in years).

 Option A: 8, 20, 28

 Option B: 16, 28, 36

 Option C: 20, 35, 45

 Option D: 20, 35, 48

 Option E: None of these
Output (English): Option B