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 started a business with an investment of rs . 70000 and after 6 months b joined him investing rs . 120000 . if the profit at the end of a year is rs . 13000 , then the share of b is ? 
Options: a ) 6000 , b ) 12000 , c ) 18000 , d ) 24009 , e ) 24002

Output: a


Input: Consider Input: Problem: ravi purchased a refrigerator and a mobile phone for rs . 15000 and rs . 8000 respectively . he sold the refrigerator at a loss of 5 percent and the mobile phone at a profit of 10 percent . overall he make a . 
Options: a ) 50 , b ) 288 , c ) 27 , d ) 200 , e ) 881

Output: a


Input: Consider Input: Problem: the cost price of an book is 64 % of the marked price . calculate the gain percent after allowing a discount of 12 % ? 
Options: a ) 33 % , b ) 28.02 % , c ) 37.5 % , d ) 30.5 % , e ) 22 %


Output: c