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: Submental triangle is bounded by anterior belly of digastric (laterally), midline of the neck b/w the mandible & the hyoid bone (medially) & base of hyoid bone.Mylohyoid muscle is at the floor & submental lymph nodes are the content.', 'role': 'assistant'}]