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: Dental
The extension of anterior lingual border of mandibular denture is limited by? 
Select and explain. 
A. Mylohyoid, B. Geniohyoid, C. Genioglossus, D. Digastric
C: Genioglossus
Answer: C: Genioglossus 
Explanation: None