Hello,

Board will send you all the answer key. Wait until that time. If there is any change then that is board's responsibility and they will handle it. If any thing is not available then you can keep checking the official webpage for updation and ask your friends if they got some documents or not.

If you know any teacher then you can him/her to solve it for you. They can get the most probable answer. Still you will get everything provided by the officials so have patience.

hope it helps!