Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to wax a snowboard [title] Loosen the bolts on your bindings. [step] Use a screwdriver to loosen the bolts on your board and bindings in order to prevent divots from forming in the board when you run the iron over the base. You do not have to unscrew the bolts completely, just create a level base.

Ending1: [substeps] Rubbing the base vigorously with the component of a torch is just as effective as loosening the bolts, but if you use a torch, it should be moderately painful. [title] Prepare the base for the waxing process. Ending2: This is because the tight screws make a small dimple on the board area and you want a smooth board ares. [title] Secure the snowboard in a well-ventilated area with the base facing up. Ending3: [substeps] If your bindings are large, you may need to use a mallet or another heavy object to apply pressure to the bolts; this will be more difficult if they are larger. Drive your nail into the side of the bolt holding your iron in place. Ending4: Once you've unscrewed the bolts, use a small pair of semi-electric screws to loosen the bolts. [substeps] If your board is especially old or has few springs, you may not be able to loosen them all at once.

Answer format: ending1/ending2/ending3/ending4