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'.

Example Input: Problem: p and q invested in a business . the profit earned was divided in the ratio 4 : 5 . if p invested rs 52000 , the amount invested by q is 
Options: a ) 30000 , b ) 50000 , c ) 40000 , d ) 20000 , e ) 65000
Example Output: e

Example Input: Problem: the area of a circle is increased by 1500 % . by what percent has the radius of the circle increased ? 
Options: a ) 100 % , b ) 200 % , c ) 300 % , d ) 600 % , e ) 800 %
Example Output: c

Example Input: Problem: if the cost price of 50 articles is equal to the selling price of 46 articles , then the gain or loss percent is ? 
Options: a ) 22 , b ) 65 , c ) 78 , d ) 33 , e ) 8.69
Example Output:
e