This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity & Tongue, Subject name: Anatomy
Structure in close proximity to the lower third molar is? 
Select and explain. 
A. Inferior alveolar nerve, B. Lingual nerve, C. Facial nerve, D. Alveolar vein
A: Inferior alveolar nerve
Answer: A: Inferior alveolar nerve 
Explanation: ANSWER: (A) Inferior alveolar nerveREF: Complications in oral and maxillofacial surgery Leonard B. Kaban, M. Anthony Pogrel, David H. Perrott page 386, Australian Dental Journal 1997;42:(3):149-52Many complications can occur from the removal of mandibular third molar teeth. Damage to the inferior alveolar nerve (IAN) is an unusual but important one. The IAN runs in a bony canal within the mandible in close proximity to the root tips of mandibular molar teeth. Damage to the nerve manifests itself as a sensory disturbance of the lower lip and chin up to the midline.