Finish the following sentence with the best choice: How to clean a toothbrush which is dirty to sanitize it?

Choices:
- place the toothbrush in cold water for a few minutes and afterward, rinse with Boiling water in a bowl with added salt
- 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

Answer:
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