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: Forensic Medicine
[{'content': 'Spinal cord is opened from the : \nSelect and explain. \nA. Frontal approach, B. Back side, C. Lateral side, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Back side', 'role': 'assistant'}]