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
[{'content': 'Laryngeal mask is contraindicated in all except? \nSelect and explain. \nA. Oral tumor, B. Ocular surgeries, C. Massive maxillofacial injury, D. High risk of aspiration', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Ocular surgeries", 'role': 'assistant'}]