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
In high potassium serum levels, kidney compensation occurs by? 
Select and explain. 
A. Decreased reabsorption in PCT, B. Increased secretion in PCT, C. Increased secretion in DCT, D. Decreased reabsorption in loop of Henle
C: Increased secretion in DCT
Answer: C: Increased secretion in DCT 
Explanation: Ans. is'c'i.e., Increased secretion in DCT[Ref: Guyton & hall p. 201Potassium transpo:Potassium is one of the few substances that are both reabsorbed as well as secreted by the renal tubules.The reabsorption of about two-thirds of the filtered K+ occurs in the proximal tubulesK+ reabsorption as weII as secretion takes place.Here also, reabsorption of K+ occurs independent of K+ status of the body.It is the secretory process that K+ regulated by aldosterone in response to the K+ and Na+ status of body.