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
Which of the following diuretics is contraindicated in the presence of cardiac failure? 
Select and explain. 
A. Mannitol, B. Spironolactone, C. Furosemide, D. Hydrochlorothiazide
A: Mannitol
Answer: A: Mannitol 
Explanation: None