This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Hip injuries, Subject name: Orthopaedics
[{'content': 'All of the following areas are commonly involved sites in pelvic fracture except \nSelect and explain. \nA. Pubic rami, B. Alae of ilium, C. Acetabulum, D. Ischial tuberosities', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ref : maheswari 9th ed', 'role': 'assistant'}]