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

How to decorate a fish tank
Try a colorful sand for a beautiful base.
Aquarium sand and comes in a variety of colors, and you can choose your favorite as a base for your aquarium. Light colors do well, as they become almost glittery in water.

Available options: (A). Avoid metal sand or driftwood in water that has clear glass centers, too. Add aquarium material outside your tank if it gets dry. (B). Popular, colorful sand options include striped sand, silver white sand, and glass sand. Create artwork with a color of the sea using fish colors and stripes or paint. (C). You can also layer different colors, though keep in mind they will get mixed up over time. Another option is a pale tan sand to make your aquarium look like the ocean. (D). Add brightly colored sand to your tank in advance. Goldfish, for instance, use a purple tank to reflect light.
(C).