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

Ex Input:
Problem: the marks obtained by polly and sandy are in the ratio 5 : 6 and those obtained by sandy and willy are in the ratio of 9 : 7 . the marks obtained by polly and willy are in the ratio of . . . ? 
Options: a ) 9 : 8 , b ) 11 : 10 , c ) 13 : 12 , d ) 15 : 14 , e ) 17 : 16

Ex Output:
d


Ex Input:
Problem: the compounded ratio of ( 2 : 3 ) , ( 6 : 11 ) and ( 11 : 2 ) is : 
Options: a ) 1 : 2 , b ) 5 : 9 , c ) 2 : 1 , d ) 11 : 24 , e ) none

Ex Output:
c


Ex Input:
Problem: what is the number of integers from 1 to 1000 ( inclusive ) that are divisible by neither 10 nor by 35 ? 
Options: a ) 884 , b ) 890 , c ) 892 , d ) 910 , e ) 945

Ex Output:

d