Multi-select problem: How does the next paragraph end?

How to clean a vinyl fence
Choose between vinegar and detergent.
There are a wide variety of cleaning products you can use to help clean your vinyl fence. Two of the easiest to use, though, are vinegar and household dish detergent.

OPTIONS: (I). Both are effective, cheap, and safe to use. Vinegar is a great natural product that you may already have at home. (II). Both can be purchased at most hardware stores or online. Vinegar is sweeter than dish detergent, but it has fewer chemicals than dish detergent. (III). Fill your bucket with one cup of white vinegar and one-quarter-amount of dish detergent. Add two tablespoons of dish detergent and water into the bucket, and stir so that both ingredients are completely dissolved. (IV). Vinegar and mild dish detergent are good choices for canned or dry fences. Vinegar can also quickly reverse rust and repair cracked, decaying and illegible boards.
(I).