This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'The following causes increased intra cranial pressure: \nSelect and explain. \nA. Thiopentone, B. Aithesin, C. Ketamine, D. Barbiturate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ketamine increases cerebral blood flow and intracranial pressure. Hence contraindicated in raised ICT. All other given drugs donot cause raised ICT and is hence safe in ICT.', 'role': 'assistant'}]