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 drugs cause diarrhea? \nSelect and explain. \nA. Morphine, B. Atropine, C. Lithium, D. Magnesium sulfate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Magnesium sulfate", 'role': 'assistant'}]