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': 'A displaced, unfavorable fracture in the mandibular angle region is a potentially difficult fracture to treat because of \nSelect and explain. \nA. Injury to neurovascular bundle, B. Malocclusion secondary to injury, C. Distraction of fracture segments by muscle pull., D. Increased density of bone in this region of mandible', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]