Finish the following sentence with the best choice: How long do you need to wait until the glue gun heats up?

Choices:
- Give the gun 3 minutes to cool down up, and then squeeze the trigger to check if the glue is flowing.
- Give the gun 3 minutes to warm up, and then squeeze the trigger to check if the glue is flowing.

Answer:
Give the gun 3 minutes to warm up, and then squeeze the trigger to check if the glue is flowing.