Which of the following is an example of the second law of thermodynamics as it applies to biological reactions?

• A. All types of cellular respiration produce ATP.
• B. Cellular respiration releases some energy as heat.
• C. The first and second choices are correct.
• D. The first, second, and third choices are correct.
• E. The aerobic respiration of one molecule of glucose produces six molecules each of carbon dioxide and water.