Task: Question Answering
Input (English): Question: The simple Interest on a certain sum of money at the rate of 4% p.a. for 5 years is Rs. 1680. At what rate of interest the same amount of interest can be received on the same sum after 4 years ?

 Option A: 5%

 Option B: 6%

 Option C: 8%

 Option D: 4%

 Option E: 7%
Output (English): Option A