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: ENT
After mandibulectomy, muscle preventing falling back of tongue - 
Select and explain. 
A. Genioglossus, B. Hyoglossus, C. Palatopharyngeus, D. All of the above
B: Hyoglossus
Answer: B: Hyoglossus 
Explanation: None