This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pathology
[{'content': 'Insulinoma is the most common functioning tumor of- \nSelect and explain. \nA. Pancreas, B. Liver, C. Gallbladder, D. Thyroid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Beta-cell tumours or insulinomas are the most common of pancreatic endocrine neoplasms . It may produce sufficient insulin to induce clinically significant hypoglycemia. Clinical picture is dominated by hypoglycemic episodes.,which occurs if blood glucose level falls below 50 mg /DL of serum. Clinical manifestations are confusion,stupor and loss of consciousness. (Ref:ROBBINS Textbook of pathology) ref img', 'role': 'assistant'}]