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

[Q]: Problem: in a group of 90 students , 36 are taking history , and 32 are taking statistics . if 57 students are taking history or statistics or both , then how many students are taking history but not statistics ?
Options: a ) 9 , b ) 19 , c ) 25 , d ) 27 , e ) 31
[A]: c

[Q]: Problem: a garrison of 400 men had a provision for 31 days . after 26 days 275 persons re - enforcement leave the garrison . find the number of days for which the remaining ration will be sufficient ?
Options: a ) 16 days , b ) 45 days , c ) 10 days , d ) 17 days , e ) 18 days
[A]: a

[Q]: Problem: the ratio of the number of females to males at a party was 1 : 2 but when 4 females and 4 males left , the ratio became 1 : 3 . how many people were at the party originally ?
Options: a ) 20 , b ) 22 , c ) 24 , d ) 26 , e ) 28
[A]:
c