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: Physiology
Normal excretion of protein in urine per day is: 
Select and explain. 
A. 100 mg, B. 150 mg, C. 400 mg, D. 600 mg
A: 100 mg
Answer: A: 100 mg 
Explanation: A i.e. 100 mgThe amount of protein in urine is normally less than 100ing/ dayQ. Most of this is not filtered and comes from shed tubular cells.