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': "Ashley's rule is used to : \nSelect and explain. \nA. Determine age using sternum, B. Determine sex using sternum, C. Determine age using mandible, D. Determine sex using mandible", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ashley's rule States that male sternum lenth will be more than 149mm and female\xa0sternum lenth will be less\xa0than 149mm.", 'role': 'assistant'}]