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: evaluate : 28 % of 400 + 45 % of 250 
Options: a ) 220.3 , b ) 224.5 , c ) 190.3 , d ) 150 , e ) none of these

Output: b


Input: Consider Input: Problem: what is 15 percent of 44 ? 
Options: a ) 6.6 , b ) 7.8 , c ) 8.9 , d ) 9.4 , e ) 10.2

Output: a


Input: Consider Input: Problem: machine a and machine b are each used to manufacture 660 sprockets . it takes machine a 10 hours longer to produce 660 sprockets than machine b . machine b produces 10 percent more sprockets per hour than machine a . how many sprockets per hour does machine a produces ? 
Options: a ) 6 , b ) 6.6 , c ) 60 , d ) 100 , e ) 110


Output: a