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: Surgery
Kraissl's lines arc: 
Select and explain. 
A. Collagen and elastin lines in stab wounds, B. Point of maximum tension in a fracture, C. Point of tension in hanging, D. Relaxed tension lines in skin
D: Relaxed tension lines in skin
Answer: D: Relaxed tension lines in skin 
Explanation: Answer- D. Relaxed tension lines in skinKraissl's lines are essentially exaggerated wrinkle lines obtained by studying the loose skin of elderly faces whilst contracting the muscles of facial expression These lines for the most pa correspond to Relaxed skin tension lines (RSTLs), but slight variation exists on the face, especially on the lateral side of the nose, the lateral aspect of the orbit, and the chin.