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': 'All are true of exotoxin, except: JIPMER 14 \nSelect and explain. \nA. Protein in nature, B. Antigenic, C. Heat stable, D. Highly toxic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Heat stable', 'role': 'assistant'}]