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': 'Tyre sign is seen in: COMEDK \nSelect and explain. \nA. Bite mark, B. Anal abuse, C. Buccal coitus, D. Vulvovaginal abuse', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Anal abuse', 'role': 'assistant'}]