Finish the following sentence with the best choice: How to lightly pickle onions?

Choices:
- 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
- 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:
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