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: Surgery
[{'content': 'Checkpoint for stability of fixation of ZMC fracture: \nSelect and explain. \nA. Zygomaticomaxillary, B. Zygomaticofrontal, C. Arch symmetry, D. Infraorbital rim', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]