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: ENT
Structure injured during excision of Ranula 
Select and explain. 
A. parotid duct, B. Facial artery, C. Submandibular duct, D. Lingual nerve
C: Submandibular duct
Answer: C: Submandibular duct 
Explanation: None