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
Aldosterone secretion is controlled by all of the following except: 
Select and explain. 
A. ACTH., B. Increase in ECF volume., C. Increase in potassium ion concentration in ECF., D. Decrease in the sodium ion concentration in ECF.
B: Increase in ECF volume.
Answer: B: Increase in ECF volume. 
Explanation: Aldosterone secretion is controlled by

ACTH
Increase in potassium ion concentration in ECF
Decrease in sodium ion concentration in ECF
Decrease in ECF volume