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': 'Ketamine acts an which receptors \nSelect and explain. \nA. GAGA, B. Muscarinic, C. 5-HT4, D. NMDA', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., NMDA See explanation- 5 of session- 2 of Anaesthesia of All India 2014-15 pattern of this book", 'role': 'assistant'}]