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
Which of the following is the best treatment for severe digitalis toxicity 
Select and explain. 
A. Potassium supplementation, B. Diphenyl hydantoin, C. FAB antibodies for digoxin, D. Quinidine
C: FAB antibodies for digoxin
Answer: C: FAB antibodies for digoxin 
Explanation: 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