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: how is 4 % expressed as a decimal fraction ? 
Options: a ) 0.4 , b ) 0.04 , c ) 0.004 , d ) 0.0004 , e ) 4

Output: b


Input: Consider Input: Problem: find number which is 60 % less than 120 . 
Options: a ) 18 , b ) 22 , c ) 28 , d ) 48 , e ) 98

Output: d


Input: Consider Input: Problem: if 40 % of a certain number is 160 , then what is 10 % of that number ? 
Options: a ) 100 , b ) 40 , c ) 80 , d ) 120 , e ) 110


Output: b