This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Drug of choice for intraoperative right hea failure due to pulmonary hypeension 
Select and explain. 
A. Dopamine, B. Isoprenaline, C. Milrinone, D. Halothane
C: Milrinone
Answer: C: Milrinone 
Explanation: .