Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?

• A. Aspartame is as sweet as table sugar, but unlike table sugar, it is not readily oxidized in human body due to lack of requisite enzymes.
• B. When aspartame is used in food processing, the sweet taste remains, but it becomes resistant to oxidation.
• C. Aspartame is as sweet as sugar, but after ingestion into the body, it is converted into metabolites that yield no calories.
• D. Aspartame is several times sweeter than table sugar, hence food items made with small quantities of aspartame yield fewer calories on oxidation.