Finish the following sentence with the best choice: How to prevent a padlock from freezing.

Choices:
- Keep moisture out of key holes, keep lock coated with WD-40 and if needed heat end of key before inserting.
- Keep moisture out of key holes, keep lock coated with WD-40 and if needed wet end of key before inserting.

Answer:
Keep moisture out of key holes, keep lock coated with WD-40 and if needed heat end of key before inserting.