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': 'Which of the following is the best treatment for severe digitalis toxicity \nSelect and explain. \nA. Potassium supplementation, B. Diphenyl hydantoin, C. FAB antibodies for digoxin, D. Quinidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: DIGIBIND, Digoxin Immune Fab (Ovine), is a sterile lyophilized powder of binding fragments (Fab) derived from specific antidigoxin antibodies raised in sheep. Production of antibodies specific for digoxin involves conjugation of digoxin as a to human . Ref: KD Tripathi 8th ed', 'role': 'assistant'}]