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 t . v . set worth rs . 40000 is to be paid in 20 installments of rs . 1000 each . if the rate of interest be 6 % per annum , and the first installment be paid at the time of purchase , then the value of the last installment covering the interest as well will be ? 
Options: a ) 22678 , b ) 26699 , c ) 26788 , d ) 19000 , e ) 39000

Output: e


Input: Consider Input: Problem: the profit earned by selling an article for rs . 832 is equal to the loss incurred when the same article is sold for rs . 448 . what should be the sale price for making 80 % profit ? 
Options: a ) 1152 , b ) 230 , c ) 960 , d ) 780 , e ) 400

Output: a


Input: Consider Input: Problem: the percentage profit earned by selling an article for rs . 1620 is equal to the percentage loss incurred by selling the same article for rs . 1280 . at what price should the article be sold to make 25 % profit ? 
Options: a ) 3000 , b ) 1812.5 , c ) 2000 , d ) 5600 , e ) 3400


Output: b