This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Brunner's glands are seen in which of the following? 
Select and explain. 
A. Stomach, B. Small intestine, C. Large intestine, D. Duodenum
D: Duodenum
Answer: D: Duodenum 
Explanation: Brunner's glands (or duodenal glands) are compound tubular submucosal gland found in that poion of the duodenum which is above the hepatopancreatic sphincter (sphincter of Oddi). The main function of these glands is to produce a mucus-rich alkaline secretion ref - BDC 6e vol2 pg259