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: Surgery
Which of the following retractor is used for retracting the lingual flap because of close proximity of lingual nerve to mandibular 3rd molar: 
Select and explain. 
A. Howarth retractor., B. Austin retractor., C. L retractor., D. Any of the above.
A: Howarth retractor.
Answer: A: Howarth retractor. 
Explanation: Howarth's retractor:  Howarth's elevator can be used for retracting the lingual flap because of close proximity of the lingual nerve in relation to the impacted third molar.