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
Which of the following will produce decreased EEG ACTIVITIES? 
Select and explain. 
A. hypothermia, B. early hypoxia, C. ketamine, D. nitrous oxide
A: hypothermia
Answer: A: hypothermia 
Explanation: Decreased EEG Increased EEG All inhalational and intravenous anaesthetics Ketamine hypoxia N2O hypercapnia Early hypoxia Hypothermia Early hypothermia Hypotension Early hypercapnia Early hypotension