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: on selling 17 balls at rs . 720 , there is a loss equal to the cost price of 5 balls . the cost price of a ball is 
Options: a ) 20 , b ) 30 , 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: a shopkeeper sells 600 metres of cloth for rs . 18000 at a loss of rs . 5 per metre . find his cost price for one metre of cloth ? 
Options: a ) 12 , b ) 27 , c ) 29 , d ) 35 , e ) 21


Output: d