This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology, Subject name: Forensic Medicine
[{'content': 'Gastric lavage is contraindicated in which of the following poisoning? \nSelect and explain. \nA. Organophosphorous, B. Dhatura, C. Kerosene, D. Copper sulphate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c (Kerosene). (Ref. Parikh, Textbook of FMT, 5th/684)GASTRIC LAVAGE# Useful only in first hour of ingestion# Should be used in patients with altered sensorium# Should not be used in (contraindicated) in patients with ingestion of alkalies and acids, kerosene poisoning and in stupourous and comatose patients.', 'role': 'assistant'}]