Multi-choice problem: Choose from the options at the end, and answer how do you do this: How to clean a toothbrush which is dirty to sanitize it?

Available options:
A). place the toothbrush in cold water for a few minutes and afterward, rinse with Boiling water in a bowl with added salt
B). Boil some water in a bowl and add salt, afterward place the toothbrush in the mixture for a few minutes and rinse with cold water
B).