Task: Question Answering
Input (English): Question: A sum of money at simple interest amounts to Rs. 805 in 3 years and to Rs. 854 in 4 years. The sum is:

 Option A: s. 650

 Option B: s. 690

 Option C: s. 688

 Option D: s. 700

 Option E: s. 718
Output (English): Option C