In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: find the annual income derived by investing $ 6800 in 30 % stock at 136 .
Options: a ) 550 , b ) 1500 , c ) 250 , d ) 1300 , e ) 400

Output: b

Input: Consider Input: Problem: if 40 % of a certain number is 160 , then what is 30 % of that number ?
Options: a ) 270 , b ) 380 , c ) 120 , d ) 360 , e ) 180

Output: c

Input: Consider Input: Problem: mr . karan borrowed a certain amount at 6 % per annum simple interest for 9 years . after 9 years , he returned rs . 8010 / - . find out the amount that he borrowed .
Options: a ) s . 5266 , b ) s . 5269 , c ) s . 5228 , d ) s . 5201 , e ) s . 52192
Output: d