Finish the following sentence with the best choice: To make berries stay fresh longer in the refrigerator.

Choices:
- Place the unwashed berries in a glass jar and place the jar in the coolest part of the refrigerator.
- Wash the berries in vinegar and dry thoroughly before storing them in the refrigerator.

Answer:
Wash the berries in vinegar and dry thoroughly before storing them in the refrigerator.