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
Anatomical structure injured in excision of ranula 
Select and explain. 
A. Lingual vein, B. Lingual artery, C. Submandibular duct, D. Parotid duct
C: Submandibular duct
Answer: C: Submandibular duct 
Explanation: None