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
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 
Select and explain. 
A. c, B. d, C. ab, D. bd
D: bd
Answer: D: bd 
Explanation: None