Task: Question Answering
Input (English): Question: A money lender lent Rs. 1000 at 3% per year and Rs. 1400 at 5% per year. The amount should be returned to him when the total interest comes to Rs. 350. Find the number of years.

 Option A: 3.5

 Option B: 3.75

 Option C: 4

 Option D: 4.25

 Option E: 4.5
Output (English): Option A