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': 'NOT a feature of ligature strangulation: Kerala 08 \nSelect and explain. \nA. Horizontal ligature mark, B. Incomplete ligature mark, C. Marked congested face, D. Sub-conjunctival hemorrhage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Incomplete ligature mark', 'role': 'assistant'}]