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
[{'content': 'Characteristic postmortem finding of carbolic acid poisoning is: \nSelect and explain. \nA. Greenish stomach, B. Yellow charred stomach, C. Brown leathery stomach, D. Black charred stomach', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (C). Brown leathery stomach(Ref: Review of Forensic Medicine and toxicology; Gautum Biswas; 2nd edition; Pg - 505)Stomach MucosaSulphuric acid: Charred/Black/blotting paper stomachQCopper sulphate: Bluish greenFerrous sulphate: GreenArsenic: Pink velvety mucosaQ/strawberryQNitric acid: yellowCarbolic acid: White leathery stomachQCarbolic acid: White/ Grey leathery stomachQHCN: PinkKCN: Brick red to brownCresols: BrownNoteOn contact, carbolic acid hardens the tissues.Stomach mucosa hardens and becomes leathery likeQ.That's why, gastric lavage can be doneQ in carbolic acid poisoning.", 'role': 'assistant'}]