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': 'Which one of the following anaesthetic agents causes a rise in the Intracranial pressure: \nSelect and explain. \nA. Sevoflurane, B. Thiopentone sodium, C. Lignocaine, D. Propofol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intracranial pressure is increased at high inspired concentration of sevoflurane but this effect is minimal over the 0.5-1MAC range. Ref: Textbook of Anaesthesia By Aitkinhead, 4th Edition, Page 159; Clinical Anesthesiology By Morgan, 3rd Edition, Pages 138, 558', 'role': 'assistant'}]