Multi-choice problem: Continue writing the next sentence in this paragraph:

How to clean onyx
Wipe the surface with a soft, damp cloth and mild soap.
Regular household cleaners are often acidic and can damage onyx. Milder soaps are ideal, such as dish detergent or soaps labeled " green, " which are usually ph-neutral.

OPTIONS: *Dish soap is more harsh, preventing bacteria from growing. Avoid using soap or other soaps with the capability to remove dirt from pebbles, like salt.. *Apply a disinfectant to remove stains. A basic disinfectant is a soft, absorbent aerosol--like a regular dish cleanser.. *Use a soft-bristled brush to remove crusted-on spills. Harsh scrubbers can scratch onyx, so it's better to use a cleaning brush.. *Avoid using abrasive cleaners, as they can leave scratching marks on your onyx. Clean clean and dry the sterling silver with a soft cloth..
Use a soft-bristled brush to remove crusted-on spills. Harsh scrubbers can scratch onyx, so it's better to use a cleaning brush.