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

How to clean glass shower doors
Wipe with a fabric softener sheet or magic eraser.
Wipe a damp dryer sheet or mr clean magic eraser over the mineral stain and it may come off directly. This won't always work, but is often a quick and convenient option to start with.

pick from the following. (a). You'll know you're done when it comes up clean on your bathtub and mirror. If it doesn't come off, seal it up with aluminum, fiberglass, or even vinyl as an alternative cleaner. (b). Rinse with warm water, once the stained area is clean. Allow the water to soften and rinse again using the normal baking soda rinse method. (c). Either way, rinse off the door afterward to remove the cleaning product. Be aware that some dryer sheets may leave scent on the shower door. (d). Look for specialty detergent/cleaner mixtures. These release thicker stains but they are harder to get out.
(c).