This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asphyxia, Subject name: Forensic Medicine
Ligature material in case of hanging is kept preserved as - 
Select and explain. 
A. Ligature knot is opened completely, B. Ligature is cut at the knot, C. Ligature is cut away from the knot, D. Ligature knot should not be cut
C: Ligature is cut away from the knot
Answer: C: Ligature is cut away from the knot 
Explanation: Ligature is cut away from the knot. Depth, width, direction, raised edges of skin, zones of hyperaemia, presence of duplicate strangulation marks, dried excoriations due to slippage of the implement, textile weave pattern, distribution of petechia in skin, scratch marks All these things are to be noted at the ligature site, after the ligature is cut away. Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 13, page-177.