This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special topics, Subject name: Forensic Medicine
[{'content': 'Breakfast, Lunch and dinner sign \nSelect and explain. \nA. Bed bug, B. Mite, C. Ant, D. Tick', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bed bugs classically form a line of bites colloquially referred to as " breakfast lunch and dinner" sign and rarely feed in the armpit or behind the knees which may help differentiate it from other hitting insects. Ref: wikipedia', 'role': 'assistant'}]