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: Orthopaedics
[{'content': "Poor prognostic factors in pott's paraplegia -a) Acute onset of paraplegiab) Sudden progression of paraplegiac) Motor paralysis aloned) Long standing paraplegiae) Paraplegia in children \nSelect and explain. \nA. c, B. d, C. ab, D. bd", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]