This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
Preload of heart reduced by: 
Select and explain. 
A. CCB, B. Minoxidil, C. Hydralazine, D. Nitroglycerine
D: Nitroglycerine
Answer: D: Nitroglycerine 
Explanation: Ans. d. NitroglycerineRef: Goodman Gilman 13th E/P491Arterial dilators: Decrease afterloadVenodilators: Decrease preloadMixed dilators: Decrease both preload and afterloadCalcium channel blockersNitratesNitroprussideMinoxidil ACE InhibitorsHydralazine ARBsFenoldopam DRIsDiazoxide Alpha blockers