This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Airway, Subject name: Anaesthesia
Which supraglottic airway devise offers maximum airway seal during positive pressure ventilation:- 
Select and explain. 
A. LMA proseal, B. LMA classic, C. Igel, D. Laryngeal tube
A: LMA proseal
Answer: A: LMA proseal 
Explanation: Among the supraglottic airway devise proseal has maximum seal Pressure thus has least chance of aspiration.