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
Least reabsorption out of the following in the Nephron is - 
Select and explain. 
A. Glucose, B. Urea, C. Na +, D. HC0
B: Urea
Answer: B: Urea 
Explanation: Renal handling of various plasma constituents in a normal adult human on an average diet.