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': 'The most reliable bones for the purpose of medullary index are the following except - \nSelect and explain. \nA. Humerus, B. Tibia, C. Radius, D. Sternum', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sex of long bones can be determined by medullary index of tibia, humerus, radius and ulna.', 'role': 'assistant'}]