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': 'ingredient of marking nut is: NEET 14 \nSelect and explain. \nA. Semecarpol, B. Croton, C. Abrin, D. Ricin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Semecarpol', 'role': 'assistant'}]