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': 'Oral diaphragm is formed by - \nSelect and explain. \nA. Mylohyoid, B. Genioglossus, C. Hyoglossus, D. Buccinator', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mylohyoid muscle of each side unite to make a thin sheet of muscular floor (oral diaphragm) of oral cavity.', 'role': 'assistant'}]