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
The safest initial approach to open airway of patient with maxillofacial trauma is: 
Select and explain. 
A. Head tilt-chin tilt, B. Jaw thrust technique, C. Head lift-neck lift, D. Heimlich procedure
A: Head tilt-chin tilt
Answer: A: Head tilt-chin tilt 
Explanation: None