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
Numbness and tingling sensation felt in the anterior one third of the tongue can be due to: 
Select and explain. 
A. Over extended lingual borders, B. Sharp and rough lingual borders, C. Allergy to residual monomer of acrylic, D. Excessive vertical dimension
A: Over extended lingual borders
Answer: A: Over extended lingual borders 
Explanation: None