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: if a large pizza has a radius that is 10 % larger that that of a medium pizza , what is the percent increase in area between a medium and a large pizza ? 
Options: a ) 15 % , b ) 21 % , c ) 25 % , d ) 30 % , e ) 36 %

Output: b


Input: Consider Input: Problem: a man invests rs . 3,000 at the rate of 5 % per annum . how much more should he invest at the rate of 8 % , so that he can earn a total of 6 % per annum ? 
Options: a ) rs . 1200 , b ) rs . 1300 , c ) rs . 1500 , d ) rs . 2000 , e ) none of these

Output: c


Input: Consider Input: Problem: ravi and kavi start a business by investing â ‚ ¹ 6000 and â ‚ ¹ 72000 , respectively . find the ratio of their profits at the end of year . 
Options: a ) 2 : 12 , b ) 5 : 12 , c ) 7 : 12 , d ) 1 : 12 , e ) 3 : 12


Output: d