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
[{'content': 'Brunner&;s glands are present in \nSelect and explain. \nA. Esophagus, B. Stomach, C. Duodenum, D. Ileum', 'role': 'user'}, {'content': "Answer: C \nExplanation: Submucosal glands of duodenum are Brunner's glands, they are mucus, bicarbonate-secreting glands. This helps in protecting duodenal epithelium from acidic secretions of the stomach.", 'role': 'assistant'}]