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: Psychiatry
[{'content': 'A patient seen a rope and fears like a snake. It is called: \nSelect and explain. \nA. Husion, B. Hallucination, C. Delusion, D. Depresonalization', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Illusion', 'role': 'assistant'}]