While researching a topic, a student has taken the following notes:

* Chemical leavening agents cause carbon dioxide to be released within a liquid batter, making the batter rise as it bakes.
* Baking soda and baking powder are chemical leavening agents.
* Baking soda is pure sodium bicarbonate.
* To produce carbon dioxide, baking soda needs to be mixed with liquid and an acidic ingredient such as honey.
* Baking powder is a mixture of sodium bicarbonate and an acid.
* To produce carbon dioxide, baking powder needs to be mixed with liquid but not with an acidic ingredient.

The student wants to emphasize a difference between baking soda and baking powder. Which choice most effectively uses relevant information from the notes to accomplish this goal?