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
[{'content': 'Drug of choice for Right heart failure is \nSelect and explain. \nA. Sacubitril, B. Digoxin, C. Milrinone, D. Nesiritide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Milrinone is a PDE-3 inhibitor which prevents metabolism of cAMP. Increased cAMP increases myocardial contraction and vasodilation, used in Right heart failure.', 'role': 'assistant'}]