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
The landmark shown here is 
Select and explain. 
A. Nelatons line, B. Tuffier’s line, C. Transpyloric plane, D. Chein’s line
B: Tuffier’s line
Answer: B: Tuffier’s line 
Explanation: Tuffiers line is the intercristal line, that crosses either the body of L4 or L4-L5. It is the landmark for spinal anaesthesia.