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: Forensic Medicine
[{'content': 'Sex can be determined by all except ? \nSelect and explain. \nA. Preauricular sulcus, B. Innominate bone, C. Pelvic brim, D. Coccyx', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Innominate bone Male Female Preauricular sulcus Not Not frequent, narrow, shallow More frequent, broad & deep Pelvic brim Hea shaped Circular or elliptical; more spacious; longer diameters Coccyx Less movable More movable", 'role': 'assistant'}]