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: how many days per calendar year is the month a factor of the day 
Options: a ) 0 , b ) 1 , c ) 59 , d ) 90 , e ) 124

A: e
****
Q: Problem: in a group of people , if 30 people were made to stand in each column , 16 columns could be formed . if 32 people were made to stand in a column , how many columns could be formed ? 
Options: a ) 15 , b ) 20 , c ) 25 , d ) 30 , e ) 35

A:
a
****