Task: Question Answering
Input (English): Question: The C.I. on a certain sum for 2 years at 10% per annum is Rs. 525. The S.I. on the same sum for double the time at half the rate percent per annum is?

 Option A: 2387

 Option B: 500

 Option C: 286

 Option D: 298

 Option E: 261
Output (English): Option B