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 8 year old child after tonsillectomy sees a bear in her room. She screams in fright. A nurse who rushes in switches on the light, finds a rug wrapped on a armchair. She pacifies the child what the child experienced was a : \nSelect and explain. \nA. Delusion, B. Illusion, C. Hallucination, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A real object, i.e. rug wrapped on a armchair is misinterpreted as bear.', 'role': 'assistant'}]