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: there are 100 employees in a room . 99 % are managers . how many managers must leave the room to bring down the percentage of manager to 98 % ? 
Options: a ) 1 , b ) 2 , c ) 50 , d ) 49 , e ) 97

Ex Output:
c


Ex Input:
Problem: vijay sells a cupboard at 10 % below cost price . had he got rs . 1500 more , he would have made a profit of 10 % . what is the cost price of the cupboard ? 
Options: a ) 7450 , b ) 7500 , c ) 7400 , d ) 7500 , e ) none of these

Ex Output:
b


Ex Input:
Problem: how many litres of pure acid are there in 8 litres of a 20 % solution ? 
Options: a ) 2 litres , b ) 1.4 litres , c ) 1 litres , d ) 1.6 litres , e ) none of these

Ex Output:

d