Please choose the correct solution to the question: How to clean a toothbrush which is dirty to sanitize it?

Solution1: place the toothbrush in cold water for a few minutes and afterward, rinse with Boiling water in a bowl with added salt

Solution2: 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 format: solution1/solution2
Answer: solution2