This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inhalational Anesthetic Agents, Subject name: Anaesthesia
[{'content': 'Which of the following will produce decreased EEG ACTIVITIES? \nSelect and explain. \nA. hypothermia, B. early hypoxia, C. ketamine, D. nitrous oxide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Decreased EEG Increased EEG All inhalational and intravenous anaesthetics Ketamine hypoxia N2O hypercapnia Early hypoxia Hypothermia Early hypothermia Hypotension Early hypercapnia Early hypotension', 'role': 'assistant'}]