This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Pataus syndrome due to ? \nSelect and explain. \nA. Trisomy 21, B. Trisomy 18, C. 18 P, D. Trisomy 13', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Trisomy 13", 'role': 'assistant'}]