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: Pathology
[{'content': 'Which drug is indicated for pain related to acute renal calculi? \nSelect and explain. \nA. Narcotic analgesics, B. Nonsteroidal anti-inflammatory drugs (NSAIDS), C. Muscle relaxants, D. Salicylates', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Narcotic analgesics are usually needed to relieve the severe pain of renal calculi.\n\nOptions B and D:\xa0NSAIDS\xa0and\xa0salicylates\xa0are used for their anti-inflammatory and antipyretic properties and to treat less severe pain.\nOption C: Muscle relaxants are typically used to treat skeletal muscle spasms.', 'role': 'assistant'}]