Cyanide poisoning antidote: (A) Sodium nitrite, (B) Sodium thiosulfate, (C) Sodium bicarbonate, (D) Sodium gluconate
Answer is A. Cyanide Antidotes :

Eli lilly antidote.
Sodium nitrite,Amyl nitrite,Sodium thoisulphate.
Cyanokit(Hydroxycobalamin).
Kdocyanor(Dicobalt edetate).