Which of the following statements is true?

• A. The microvilli contain capillary beds so that nutrients can be absorbed efficiently.
• B. The villi are largest in the duodenum and decrease in size throughout the length of the small intestine.
• C. Lacteals are found in the intestinal crypts and are the location of fat absorption.
• D. The circular folds of the small intestine are found in the jejunum and the ileum but not in the duodenum.