Task: Question Answering
Input (English): Problem: a person borrows 5000 for 2 years at 4 % p . a . simple interest . he immediately lends it to another person at 61 ⁄ 4 % p . a . for 2 years . find his gain in the transaction per year . 
Options: a ) 112.50 , b ) 125 , c ) 150 , d ) 167.5 , e ) none of these
Output (English): a