This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Pathology
[{'content': 'Most common site for carcinoid tumor is? \nSelect and explain. \nA. Pituitary, B. Pancreas, C. Small intestine, D. Lungs', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Small intestine * Carcinoid tumors arise from the neuroendocrine cells (Argentaffin cells or Kulchitsky cells). The majority are found in GI tract, and more than 40% in small intestine (jejunum & ileum). The tracheobronchial tree and lungs are the next common sites involved.", 'role': 'assistant'}]