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: Anatomy
[{'content': 'Submandibular gland is roughly J shaped gland situated in: \nSelect and explain. \nA. Submental triangle., B. Digastric triangle., C. Muscular triangle., D. None.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]