Task: Question Answering
Input (English): Question: A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

 Option A: Rs. 650

 Option B: Rs. 690

 Option C: Rs. 698

 Option D: Rs. 700

 Option E: Rs. 720
Output (English): Option C