This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Identification, Subject name: Forensic Medicine
[{'content': 'Pre-auricular sulcus helps in detection of which of the following \nSelect and explain. \nA. Age, B. Sex, C. Race, D. Height', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Preauricular sulcus is present in pelvis. It is used to determine the sex of an individual. It is not frequent narrow shallow in males. It is more frequent broad and deep in females. REF: The Synopsis of Forensic Medicine and Toxicology 29th edition by Dr N.S. Narayan Reddy page no: 36.', 'role': 'assistant'}]