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: fox jeans regularly sell for $ 15 a pair and pony jeans regularly sell for $ 18 a pair . during a sale these regular unit prices are discounted at different rates so that a total of $ 5 is saved by purchasing 5 pairs of jeans : 3 pairs of fox jeans and 2 pairs of pony jeans . if the sum of the two discounts rates is 18 percent , what is the discount rate on pony jeans ? 
Options: a ) 9 % , b ) 10 % , c ) 34.4 % , d ) 12 % , e ) 15 %

Output: c


Input: Consider Input: Problem: in country z , 10 % of the people do not have a university diploma but have the job of their choice , and 30 % of the people who do not have the job of their choice have a university diploma . if 40 % of the people have the job of their choice , what percent of the people have a university diploma ? 
Options: a ) 35 % , b ) 48 % , c ) 55 % , d ) 65 % , e ) 75 %

Output: b


Input: Consider Input: Problem: if the selling price of 50 articles is equal to the cost price of 40 articles , then the loss or gain percent is : 
Options: a ) 45 % , b ) 23 % , c ) 20 % , d ) 60 % , e ) 56 %


Output: c