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
[{'content': 'Not True about Ranula \nSelect and explain. \nA. Mucus extravasation cyst, B. Arises from submandibular gland, C. Seen in the floor of mouth, D. Is cystic swelling', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]