This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
[{'content': 'The laryngeal mask airway used for securing the airway of a patient in all of the following conditions except \nSelect and explain. \nA. In a difficult intubaton, B. In cardiopulmonary resuscitation, C. In a child undergoing an elective \\/ routine eye sugery, D. In a patient with a large tumour in the oral cavity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: LMA does not prevent Aspiration of gastric contents.also not used in pregnancy , oropharyngeal mass, obesity', 'role': 'assistant'}]