Task: Question Answering
Input (English): Question: At what rate percent per annum will a sum of money double in 16 years

 Option A: 6 ¼ % p.a

 Option B: 6 % p.a

 Option C: 8¼ % p.a

 Option D: 3 ¼ % p.a

 Option E: 7 ¼ % p.a
Output (English): Option B