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': 'Which is the teeth referred to if by haderup classification it is denoted as (- 4) ? \nSelect and explain. \nA. Upper canine, B. Lower first premolar, C. Upper second premolar, D. Lower first molar', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Lower first premolar", 'role': 'assistant'}]