Multi-choice problem: Choose from the options at the end, and answer how do you do this: To water proof the wooden product.

(I) Brush a coat of polyurethane always brushing with the grain. Before it dries and put 2 additional coats on it.. (II) Brush a coat of polyurethane always brushing with the grain. Let it dry and put 2 additional coats on it..
(II)