Finish the following sentence with the best choice: How to make jello in a box.

Choices:
- Whisk together 1 cup of hot water with 1 packet of jello in a large bowl. Add 1 cup of cold water to the mixture and whisk it in. Let the jello set in the refrigerator for 2 to 3 hours, then serve.
- Whisk together 1 cup of hot water with 1 packet of jello in a large bowl. Add 1 cup of cold water to the mixture and whisk it in. Let the jello set in the refrigerator for 15 minutes, then serve.

Answer:
Whisk together 1 cup of hot water with 1 packet of jello in a large bowl. Add 1 cup of cold water to the mixture and whisk it in. Let the jello set in the refrigerator for 2 to 3 hours, then serve.