This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Physiology
[{'content': 'Number of RBC excreted per day in urine is \nSelect and explain. \nA. 1 million, B. 2 million, C. 3 million, D. 4 million', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) 1 million# Microscopic Heamaturia: A few RBC can be found in urine of normal people. The upper limit of normal for RBC excretion is 1 million per 24 hours> Transient microscopic heamaturia can occur following rigorous exercise , sexual inter course , or from menstrual contamination', 'role': 'assistant'}]