Task: Question Answering
Input (English): Problem: a person borrows 20000 for 6 years at 8 % p . a . simple interest . he immediately lends it to another person at 9 % p . a . for 6 years . find his gain in the transaction per year . 
Options: a ) 200 , b ) 250 , c ) 210 , d ) 190 , e ) 180
Output (English): a