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
Which is the teeth referred to if by haderup classification it is denoted as (- 4) ? 
Select and explain. 
A. Upper canine, B. Lower first premolar, C. Upper second premolar, D. Lower first molar
B: Lower first premolar
Answer: B: Lower first premolar 
Explanation: Ans. is 'b' i.e., Lower first premolar