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': 'Gastric lavage is contraindicated in all the following poisonings except:- \nSelect and explain. \nA. Phenol, B. Sulphuric acid, C. Kerosene, D. Nitric acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gastric lavage is absolutely contraindicated in following condition Corrosive (except phenol which thickens the membrane and maintains leathery consistency so gastric lavage can be done) Convulsant patient Comatose patient Kerosene poisoning', 'role': 'assistant'}]