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: Anaesthesia
25 year old male sustained road traffic accident . he is found unresponsive, has a pulse but does not appear to be breathing. You are unable to give CPR, what do you do next 
Select and explain. 
A. Begin CPR, B. Abdominal thrusts, C. Hemlinch maneuver, D. Repeat head tilt/chin lift maneuver and attempt the breath again
D: Repeat head tilt/chin lift maneuver and attempt the breath again
Answer: D: Repeat head tilt/chin lift maneuver and attempt the breath again 
Explanation: If unable to deliver the first breath , then reposition the airway and attempt the breath again. Still if you are unable to deliver this breath, assume it to be a foreign body and give abdominal thrusts or heimlinch maneuver.