This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Most common symptom of thallium poisoning ? 
Select and explain. 
A. Neuropathy, B. Abdominal pain, C. Headache, D. Visual disturbances
B: Abdominal pain
Answer: B: Abdominal pain 
Explanation: Ans. is 'B' i.e., Abdominal pain"Most common symptom of acute thallium poisoning is abdominal pain with nausea 6- vomiting and diarrhea or constipation".