This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: RAAS and Heart Failure Drugs, Subject name: Pharmacology
[{'content': 'Drug inhibiting cardiac remodelling in CHF - \nSelect and explain. \nA. ACE inhibitors, B. Digitalis, C. Diuretics, D. Vasodilatus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., ACE inhibitors o Has been explained in previous sessions.", 'role': 'assistant'}]