@ aangel42:
Checkout the question paper from past papers. The answer sheet - it's this single paper numbered from 1-40. Next to each number, there are 4 tiny rectangles, lebelled A B C and D. For example, answer to question 1, is A. You colour inside the rectangle next to 1, labelled A.
You have to use HB pencil. Doesn't matter mechanical pencil or not. Main thing - it's an HB pencil. Best to carry 2-3 pencils. Carry an eraser too.
Don't worry. All instructions are on the paper. It'll be fine. No worries.