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': 'The advantage of using digoxin in CHF is: \nSelect and explain. \nA. It is used to provide relief of symptoms, B. It reverses the pathological changes of CHF, C. It prolongs the survival of CHF patient, D. All of these', 'role': 'user'}, {'content': "Answer: A \nExplanation: Digitalis and diuretics are used as symptomatic' therapy of CHF. These drugs do not retard ventricular remodelling or prolong survival in CHF patients.", 'role': 'assistant'}]