This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': "Which of the following best represents 'ranula' \nSelect and explain. \nA. A type of epulis, B. A thyroglossal cyst, C. Cystic swelling in the floor of mouth, D. Forked uvula", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ranula is an extravasation cyst arising from sublingual gland or mucous glands of Nuhn or glands of Blandin in the floor of mouth SRB,5th,365.', 'role': 'assistant'}]