25 POINTS!!!!!!!!!!!!
Which of the following describes the relationship between the villi and the plicae circulares?
A. The plicae circulares are folds in the mucosa that are lined with villi.
B. The plicae circulares are folds in the submucosa that are lined with villi.
C. The villi are folds in the mucosa that are lined with plicae circulars.
D. The villi are folds in the submucosa that are lined with plicae circulars.