This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
Bicarbonate is maximally absorbed in 
Select and explain. 
A. PCT, B. DCT, C. Thick ascending loop of Henle, D. Collecting duct
A: PCT
Answer: A: PCT 
Explanation: Hco3 is absorbed in th PCT. Ref: guyton and hall textbook of medical physiology 12 edition page number:475,476,477