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: Pharmacology
The drug that is NOT useful in congestive heart failure is: 
Select and explain. 
A. Adrenaline, B. Digoxin, C. Hydrochlorothiazide, D. Enalapril
A: Adrenaline
Answer: A: Adrenaline 
Explanation: None