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': 'In case of vertically unfavorable fracture, muscle responsible for displacement of fracture segment: \nSelect and explain. \nA. Temporalis., B. Medial Pterygoid., C. Masseter., D. All of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: These all muscles work in case of horizontal unfavourable fracture.', 'role': 'assistant'}]