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

Ex Input:
Problem: how many even integers from 1 to 100 ( both inclusive ) have even number of factors ? 
Options: a ) 13 , b ) 14 , c ) 5 , d ) 6 , e ) 7

Ex Output:
c


Ex Input:
Problem: what is the number of integers from 1 to 1000 ( inclusive ) that are divisible by neither 20 nor by 35 ? 
Options: a ) 567 , b ) 850 , c ) 560 , d ) 923 , e ) 240

Ex Output:
d


Ex Input:
Problem: find the ratio in which rice at rs . 7.10 a kg be mixed with rice at rs . 5.70 a kg to produce a mixture worth rs . 6.30 a kg 
Options: a ) 2 : 0 , b ) 3 : 4 , c ) 2 : 1 , d ) 2 : 2 , e ) 2 : 8

Ex Output:

b