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': 'During anaesthetic procedure, compression of cricoid cartilage – \nSelect and explain. \nA. Prevents spinal headache, B. Helps in preventing regurgitation, C. Aid in intubation, D. Help to relieve reflex bronchospasm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]