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: Medicine
[{'content': 'Microalbumiuria refers to urinary albumin excretion rate of: March 2004 \nSelect and explain. \nA. 30-300 mg/ day, B. 400-600 mg/ day, C. 700-900 mg/ day, D. Less than 100 mg/ day', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. 30-300 mg/ day', 'role': 'assistant'}]