This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Person at night looks at the window and frightens. Wife switches the light on and turns out That window cover is having a shape like a man. \nSelect and explain. \nA. Illusion, B. Hallucination, C. emotion, D. Loosening of association', 'role': 'user'}, {'content': 'Answer: A \nExplanation: * ILLUSION= altered perception of a real object * Mistaking a rope for a snake There are several types of illusions namely PAREIDOLIC ILLUSION==vague stimulus (like clouds) are perceived as something known to the patient (image of a dog)', 'role': 'assistant'}]