This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Toxicology - Concepts, Statutes, Evidence, and Techniques, Subject name: Forensic Medicine
Antidote for arsenic poisoning is: 
Select and explain. 
A. Ferric oxide, B. Aluminium oxide, C. Magnesium oxide, D. Nickel oxide
A: Ferric oxide
Answer: A: Ferric oxide 
Explanation: Ans. (A). Ferric oxide(Ref: Parikh 6th/e p. 9.9-9.11; Reddy 30th/e p. 493-494; Essentials of forensic medicine-812)Poisons and AntidotesPoisonAntidoteArsenicFerrous hydroxideQMethanolEthanolQ, 4 MethylpyrazoleBenzodiazepineFlumezenilOPCAtropine, OximesQCyanideEli Lilly antidoteQ (sodium nitrite, amyl nitrite, sodium thiosulphate) Kelocyanor (dicobalt aceate)Cyanokit (hydroxycobalamin)PhosphorusCuSO4 ParacetamolN acetyl cysteineOpiateNaloxoneQDhaturaPhysostigmineQCopperPotassium ferrocyanide