Task: Question Answering
Input (English): Problem: a sum of money becomes 7 / 6 of itself in 4 years at a certain rate of simple interest . the rate per annum is ? 
Options: a ) 25 / 6 , b ) 5 5 / 7 , c ) 5 5 / 2 , d ) 5 5 / 8 , e ) 5 5 / 1
Output (English): a