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

Problem: how many of the positive factors of 17 are not factors of 34 ? 
Options: a ) 0 , b ) 1 , c ) 2 , d ) 3 , e ) 4
a

Problem: there are 35 student in a school . 20 if them speek hindi 19 of them speak eng 9 of them speak both , then how many student neithe speak eng nor speak hindi 
Options: a ) 28 , b ) 30 , c ) 32 , d ) 35 , e ) none of these
e

Problem: a certain hobby shop sold model cars for $ 5.00 each and model trains for $ 8.00 each . if a customer purchased both cars and trains from the store for a total of $ 31.00 , what total number of cars and trains did the customer purchase ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7

c