This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabetes Mellitus, Subject name: Medicine
[{'content': 'HNF- 1b gene defect is seen in? \nSelect and explain. \nA. MODY2, B. MODY3, C. MODY4, D. MODY5', 'role': 'user'}, {'content': 'Answer: D \nExplanation: HNF- 1b gene is involved in pathogenesis of MODY5. HNF- 1a gene is involved in pathogenesis of MODY 3. Most common type of MODY is MODY 3.', 'role': 'assistant'}]