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: Anaesthesia
[{'content': 'The landmark shown here is \nSelect and explain. \nA. Nelatons line, B. Tuffier’s line, C. Transpyloric plane, D. Chein’s line', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Tuffiers line is the intercristal line, that crosses either the body of L4\xa0or L4-L5. It is the landmark for spinal anaesthesia.', 'role': 'assistant'}]