How is alcohol fermentation utilized by yeast in brewing and baking?

• A. Yeast uses alcohol fermentation to produce ethanol and CO2, which are essential for brewing beer and making bread rise.
• B. Yeast uses alcohol fermentation to produce lactic acid, which is essential for brewing beer and making bread rise.
• C. Yeast uses alcohol fermentation to produce ATP, which is essential for brewing beer and making bread rise.
• D. Yeast uses alcohol fermentation to produce glucose, which is essential for brewing beer and making bread rise.

Answer: (A)