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: Pharmacology
[{'content': 'Which of the following statements is true of ketorolac ? \nSelect and explain. \nA. Has potent anti-inflammatory activity, B. Its analgesic efficacy is equal to morphine in postoperative pain, C. Is used as preanaesthetic analgesic, D. It interacts with opioid receptor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ketorolac is an NSAID promoted for systemic use\xa0mainly as an analgesic, not as an anti-inflammatory\xa0drug (though it has typical NSAID properties).\nThe drug does appear to have significant analgesic efficacy and has been used successfully to replace morphine in some situations involving mild to moderate\xa0postsurgical pain.', 'role': 'assistant'}]