This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'BNP is degraded by: \nSelect and explain. \nA. Neutral endopeptidase, B. Elastase, C. Ormapatrilat, D. ACE', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Brain natriuretic peptide (BNP) was cleaved by neutral endopeptidase (NEP) BNP is useful in CCF Nesiritide blocks this neutral endopeptidase thereby enhancing levels of BNP - used in CCF Ref: KD tripathi 8th ed', 'role': 'assistant'}]