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
In surgery of submandibular salivary gland, nerve often involved -a) Hypoglosalb) Glossopharygnealc) Faciald) Lingual 
Select and explain. 
A. abc, B. ad, C. acd, D. bde
C: acd
Answer: C: acd 
Explanation: Three cranial nerves are at risk during removal of the submandibular salivary gland-the mandibular branch of facial nerve, the lingual nerve & hypoglossal nerve.