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'.

Ex Input:
Problem: rs . 200 amounts to rs . 800 in 8 years at simple interest . if the interest is increased by 5 % , it would amount to how much ? 
Options: a ) 520 , b ) 440 , c ) 260 , d ) 280 , e ) 120

Ex Output:
d


Ex Input:
Problem: yesterday ' s closing prices of 1,980 different stocks listed on a certain stock exchange were all different from today ' s closing prices . the number of stocks that closed at a higher price today than yesterday was 20 percent greater than the number that closed at a lower price . how many of the stocks closed at a higher price today than yesterday ? 
Options: a ) 484 , b ) 1080 , c ) 1,100 , d ) 1,320 , e ) 1,694

Ex Output:
b


Ex Input:
Problem: in some quantity of ghee , 50 % is pure ghee and 50 % is vanaspati . if 20 kg of pure ghee is added , then the strength of vanaspati ghee becomes 30 % . the original quantity was ? 
Options: a ) 25 , b ) 15 , c ) 30 , d ) 45 , e ) 20

Ex Output:

c