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': 'Which of the following is determined by measuring sciatic notch index in a skeleton? \nSelect and explain. \nA. Determination of age, B. Identification of sex, C. Determination of race, D. Cause of death', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sciatic notch index is a trait used for differentiating sex by measuring sciatic notch. Formula is, Sciatic notch index = (width of sciatic notch/depth of sciatic notch) * 100 It is normally 4-5 in males and 5-6 in females Ref: Essentials of Forensic Medicine and Toxicology by Narayan Reddy, 27th edition, Page 56.', 'role': 'assistant'}]