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: an error 4 % in excess is made while measuring the side of a square . the percentage of error in the calculated area of the square is : 
Options: a ) 4.16 , b ) 5.16 , c ) 7.16 , d ) 8.16 , e ) 9.16

Output: d


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: an error 4 % in excess is made while measuring the side of a square . what is the percentage of error in the calculated area of the square ? 
Options: a ) 4.05 % , b ) 4.02 % , c ) 8.16 % , d ) 3 % , e ) 2 %


Output: c