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

[EX Q]: Problem: ashley paid 5 dollars for 1 notebook and 1 pencil . if both prices were integers , how many pencils did ashley buy if she paid 93 dollars for the pencils and for 15 notebooks ? 
Options: a ) 6 . , b ) 16 . , c ) 18 , d ) 21 , e ) 26
[EX A]: d

[EX Q]: Problem: how many trailing zeros will be there after the rightmost non - zero digit in the value of 25 ! ( factorial 25 ) ? 
Options: a ) 25 , b ) 8 , c ) 6 , d ) 5 , e ) 2
[EX A]: c

[EX Q]: Problem: how many of the positive factors of 36 , 84 and how many common factors are there in numbers ? 
Options: a ) 2 , b ) 4 , c ) 3 , d ) 5 , e ) 6
[EX A]:
e