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: a shopkeeper sells 500 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 ) 50 , e ) 41

Output: e


Input: Consider Input: Problem: a sum of money at simple interest amounts to rs . 815 in 3 years and to rs . 865 in 4 years . the sum is : 
Options: a ) s . 665 , b ) s . 690 , c ) s . 698 , d ) s . 700 , e ) s . 720

Output: a


Input: Consider Input: Problem: the banker â € ™ s gain on a sum due 3 years hence at 10 % per annum is rs . 120 . the banker â € ™ s discount is 
Options: a ) rs . 960 , b ) rs . 840 , c ) rs . 520 , d ) rs . 760 , e ) none


Output: c