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
Guedel airway is a type airway adjunct: 
Select and explain. 
A. Oropharyngeal., B. Nasopharyngeal., C. Orotracheal., D. Nasotracheal.
A: Oropharyngeal.
Answer: A: Oropharyngeal. 
Explanation: None