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

Ex Input:
Problem: the hcf of two numbers is 42 and the other two factors of their lcm are 11 and 12 . what is the largest number . 
Options: a ) 462 , b ) 450 , c ) 480 , d ) 504 , e ) 555

Ex Output:
d


Ex Input:
Problem: pencils , pens and exercise books in a shop are in the ratio of 10 : 2 : 3 . if there are 120 pencils , the number of exercise books in the shop is : 
Options: a ) 26 , b ) 36 , c ) 46 , d ) 56 , e ) 66

Ex Output:
b


Ex Input:
Problem: two vessels contains equal number of mixtures milk and water in the ratio 7 : 2 and 8 : 1 . both the mixtures are now mixed thoroughly . find the ratio of milk to water in the new mixture so obtained ? 
Options: a ) 1 : 3 , b ) 9 : 13 , c ) 5 : 1 , d ) 11 : 3 , e ) 15 : 4

Ex Output:

c