This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 2, Subject name: Forensic Medicine
[{'content': 'The active principal in calotropis is all, except \nSelect and explain. \nA. Calotoxin, B. Calactin, C. Uscharin, D. Bhilawanol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Bhilawanol is an active principle of Semecarpaus anacardium. Active principles of calotropis: Uscharin, calotoxin and calotropin', 'role': 'assistant'}]