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
[{'content': 'Most common symptom of thallium poisoning ? \nSelect and explain. \nA. Neuropathy, B. Abdominal pain, C. Headache, D. Visual disturbances', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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".', 'role': 'assistant'}]