Finish the following sentence with the best choice: to save money on ice and keep your food cold for longer

Choices:
- Fill clean, empty milk jugs with water and chill it before leaving on your camp trip. Add the jugs to your cooler
- Fill clean, empty milk jugs with water and freeze it before leaving on your camp trip. Add the jugs to your cooler

Answer:
Fill clean, empty milk jugs with water and freeze it before leaving on your camp trip. Add the jugs to your cooler