This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
Cholera like symptoms is produced by which of the following poisons 
Select and explain. 
A. Arsenic, B. Organophosphorus, C. Lead, D. Rat killer
A: Arsenic
Answer: A: Arsenic 
Explanation: Gastroenteric type: This is the common form of poisoning. Symptoms sta by half an hour to 1 hour after ingestion. There will be abdominal pain, intense thirst and vomiting. Diarrhea stas which is soon accompanied by tenesmus. Stools are expelled frequently and involuntarily. Stools are colorless, odorless and watery resembling rice water stools of cholera, later becomes dark coloured and bloody. Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 420