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: a person borrows rs . 5000 for 2 years at 4 % p . a . simple interest . he immediately lends it to another person at 8 % p . a for 2 years . find his gain in the transaction per year . 
Options: a ) 167.5 , b ) 150 , c ) 200 , d ) 112.5 , e ) 212.5

Output: c


Input: Consider Input: Problem: two boys starts from the same place walking at the rate of 5.5 kmph and 7.5 kmph respectively in the same direction . what time will they take to be 32 km apart ? 
Options: a ) 18 , b ) 16 , c ) 19 , d ) 15 , e ) 34

Output: b


Input: Consider Input: Problem: an error 5 % 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 ) 10.01 , b ) 9.25 , c ) 10.25 , d ) 8.25 , e ) 6.25


Output: c