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': 'On both sides submental triangle is bounded by - \nSelect and explain. \nA. Hyoid bone, B. Anterior digastric, C. Posterior digastric, D. Mylohyoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: On each side of submental triangle, there is anterior belly of digastric.', 'role': 'assistant'}]