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: the price of a book is increased from $ 300 to $ 480 . what is the % of increase in its price ? 
Options: a ) 10 % , b ) 20 % , c ) 40 % , d ) 50 % , e ) 60 %

Output: e


Input: Consider Input: Problem: there were two candidates in an election . winner candidate received 62 % of votes and won the election by 408 votes . find the number of votes casted to the winning candidate ? 
Options: a ) 288 , b ) 1054 , c ) 788 , d ) 298 , e ) 177

Output: b


Input: Consider Input: Problem: the population of a town is 8000 . it decreases annually at the rate of 10 % p . a . what will be its population after 3 years ? 
Options: a ) 5100 , b ) 5120 , c ) 5200 , d ) 5400 , e ) 5832


Output: e