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: if 20 % of a number = 1000 , then 120 % of that number will be ? 
Options: a ) 20 , b ) 120 , c ) 360 , d ) 6000 , e ) 820

Output: d


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: if each year the population of the country grows by 50 % , how many years will elapse before the population of the country doubles ? 
Options: a ) 3 , b ) 4 , c ) 2 , d ) 6 , e ) 7


Output: c