Choose the correct pair of an entity and its features in regard to the alimentary canal: Entity Feature
A. | Crypts of Lieberkuhn | I. | Prevents backflow of faeces from large intestine |
B. | Duct of Wirsung | II. | Opening of hepato-pancreatic ampulla |
C. | Sphincter of Oddi | III. | Passage for pancreatic juice |
D. | Ileocaecal valve | IV. | Found in small intestine and secrete digestive juices |