In this task, you need to provide the correct option for a given problem from the provided options.

Ex Input:
Problem: teas worth rs . 126 per kg and rs . 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2 . if the mixture is worth rs 156 per kg , the price of the third variety per kg will be ? 
Options: a ) rs . 147.50 , b ) rs . 785.50 , c ) rs . 178.50 , d ) rs . 258.50 , e ) none of these

Ex Output:
c


Ex Input:
Problem: two numbers are in the ratio of 5 : 7 . if 25 be subtracted from each , they are in the ratio of 35 : 59 . find the numbers ? 
Options: a ) 60,88 , b ) 60,86 , c ) 60,82 , d ) 60,84 , e ) 60,83

Ex Output:
d


Ex Input:
Problem: in a class there are 55 pupil , out of them 10 are in debate only and 18 in singing only . then how many in both ? 
Options: a ) 132 , b ) 26 , c ) 17 , d ) 11 , e ) 12

Ex Output:

c