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
[{'content': 'Which supraglottic airway devise offers maximum airway seal during positive pressure ventilation:- \nSelect and explain. \nA. LMA proseal, B. LMA classic, C. Igel, D. Laryngeal tube', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Among the supraglottic airway devise proseal has maximum seal Pressure thus has least chance of aspiration.', 'role': 'assistant'}]