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': 'Which of the following does not have analgesic action: \nSelect and explain. \nA. Ether, B. Ketamine, C. Halothane, D. Morphine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Halothane is neither a good analgesic nor a muscle relaxant. Ether is a potent and reliable anesthetic. Ketamine produces profound analgesia and amnesia. Morphine is a potent analgesic and relieves pain without loss of consciousness. From padmaja 4th edition Page no 196,197,239', 'role': 'assistant'}]