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': 'Fan shaped muscle of tongue, which forms the main bulk: \nSelect and explain. \nA. Hyoglossus., B. Genioglossus., C. Verticalis., D. Palatoglossus.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]