This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
Flea bitten appearance of stomach mucosa is seen in: 
Select and explain. 
A. Arsenic poisoning, B. Sulphuric acid poisoing, C. Phosphorus poisoning, D. Viper snake bite
A: Arsenic poisoning
Answer: A: Arsenic poisoning 
Explanation: PM findings of acute arsenic poisoning : 1. Gastrointestinal congestion is a feature in acute arsenic poisoning and varies from reddening of mucosa (red velvet) to frank haemorrhagic gastritis. 2. Focal haemorrhages giving rise to flea bitten appearance is said to be characteristic. 3. Intestines may be inflamed and may contain "rice water" contents. 4. Subendocardial haemorrhages are often seen in hea.