This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 3, Subject name: Forensic Medicine
[{'content': 'Rain drop pigmentation is seen in:- \nSelect and explain. \nA. Arsenic poisoning, B. Phosphorous poisoning, C. Mercury poisoning, D. All of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: * Arsenic poisoning A Anemia / Aldrich mee's line / Arsenophagist (Tolerate up to 300mg)R Rain drop pigmentation / Reinsch test / Red velvety mucosa S Sub endocardial hemorrhages / Sensory neuropathy E EruptionsN NAA (neutron activation analysis)I Imbibition of arsenic (Arsenic imbibed from surrounding soils after death)C Cumulative poison / Cholera like symptom / Chelation for Rx * Phosphors poisoning - 4 'P'P - Protoplasmic poison P - Phossy jaw (lucifer's jaw) P - Photo luminescent P - Purpura * Mercury poisoningS - Strawberry tongue L - Mercuria lentisA - Acrodynia T - Tremor E - Erythism Grey - Glass blower's shake Mucosa - Minamata disease.", 'role': 'assistant'}]