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 annual interest rate earned by an investment increased by 8 percent from last year to this year . if the annual interest rate earned by the investment this year was 27 percent , what was the annual interest rate last year ? 
Options: a ) 22 % , b ) 20 % , c ) 25 % , d ) 23 % , e ) 21 %

Output: c


Input: Consider Input: Problem: i gain 70 paise on rs . 70 . my gain percent is : 
Options: a ) 0.1 % , b ) 1 % , c ) 7 % , d ) 10 % , e ) noneof these

Output: b


Input: Consider Input: Problem: if the selling price of 100 articles is equal to the cost price of 40 articles , then the loss or gain percent is : 
Options: a ) 25 % , b ) 40 % , c ) 60 % , d ) 65 % , e ) 50 %


Output: c