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': 'A common side effect associated with all NSAID drugs is \nSelect and explain. \nA. Drowsiness, B. Gastric irritation, C. Xerostomia, D. Constipation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]