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: Medicine
In Conn's disease, there is an excess of: 
Select and explain. 
A. Adrenaline, B. Aldosterone, C. Cortisol, D. Noradrenaline
B: Aldosterone
Answer: B: Aldosterone 
Explanation: None