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 profit earned by selling an article for rs . 753 is equal to the loss incurred when the same article is sold for rs . 455 . what should be the sale price for making 50 % profit ? 
Options: a ) 706 , b ) 786 , c ) 906 , d ) 896 , e ) 696

Output: c


Input: Consider Input: Problem: a 6 litre sol is 30 % alcohol . how many litres of pure alcohol must be added to produce a sol that is 50 % alcohol ? 
Options: a ) a . 0.6 , b ) b . 1 , c ) c . 2.1 , d ) d . 3 , e ) e . 2.4

Output: e


Input: Consider Input: Problem: solve the quickfire maths brain teaser √ 9 % = ? 
Options: a ) 30 % , b ) 40 % , c ) 85 % , d ) 19 % , e ) 29 %


Output: a