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
Barium carbonate poisoning causes - 
Select and explain. 
A. Respiratory distress, B. Gastrointestinal Irritation, C. Muscular weakness, D. Cyanosis
B: Gastrointestinal Irritation
Answer: B: Gastrointestinal Irritation 
Explanation: It is a rodenticide Clinical Features1. CNS--Mydriasis, paraesthesias, depressed tendon reflexes,headache, confusion, convulsions.2. CVS--Hypeension, cardiac arrhythmias (premature ventricular complexes, ventricular tachycardia, bradycardia and ventricular fibrillation asystole/fibrillation.3. LMS--Myoclonus, myalgia, cramps, dysahria, flaccid quadriplegia.4. RS--Pulmonary oedema5. Hypokalaemia, metabolic and respiratory acidosis, and renal failure are commonly repoed. In fact, quadriplegia is usually the result of severe hypokalaemia. 6.GIT--Salivation, vomiting, abdominal pain, diarrhoea Ref: NCBI.NIH.org.