Task: Question Answering
Input (English): Problem: a person borrows 9000 for 9 years at 3 % p . a . simple interest . he immediately lends it to another person at 7 % p . a . for 9 years . find his gain in the transaction per year . 
Options: a ) 380 , b ) 360 , c ) 340 , d ) 300 , e ) 180
Output (English): b