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': 'All of the following about thiopentone are true except? \nSelect and explain. \nA. It decreases ICT, B. It has anticonvulsant action, C. IV injection is painless, D. It can cause reflex tachycardia', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., IV injection is painless", 'role': 'assistant'}]