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: Dental
Wharton's duct drains the: 
Select and explain. 
A. Pancreas, B. Parotid, C. Lacrimal gland, D. Submandibular gland
D: Submandibular gland
Answer: D: Submandibular gland 
Explanation: None