What is the  difference between Hindi course A and course B? 

As i have taken Sanskrit as my subject but i have to attempt the paper of Hindi of 9th class as this time the question papers are coming from board. I enquired in my school then they said we have to study the course A itself. 

I am confused whether different schools follow different courses or not. I have heard for the students of 10th class taking hindi as optional give the paper of course as it is a little bit easier.

please make me understand !!!!!