Please choose the correct solution to the question: How to lightly pickle onions?

Solution1: peel the onions and place them in a container, then ice water to a cold temperature with seasonings, pour into the container and refrigerate with the lid off

Solution2: slice the onions and place them in a container, then bring water to a high temperature with seasonings, pour into the container and refrigerate with the lid on

Answer format: solution1/solution2