Finish the following sentence with the best choice: To make an instant cake mixture.

Choices:
- Mix a box of Angel food cake and a box of any flavored cake until completely mixed. Store it in a sealed container until needed.
- Mix a box of Angel food cake and a box of any flour until completely mixed. Store it in a sealed container until needed.

Answer:
Mix a box of Angel food cake and a box of any flavored cake until completely mixed. Store it in a sealed container until needed.