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: Surgery
Subperiosteal abscess, penetrating deep is seen after extraction of 
Select and explain. 
A. Maxillary 3rd molar, B. Mandibular 3rd molar, C. Maxillary 1st molar, D. Mandibular 1st molar
B: Mandibular 3rd molar
Answer: B: Mandibular 3rd molar 
Explanation: None