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
Hallucination is disorder of: Maharashtra 09; BHU 12; NEET 13 
Select and explain. 
A. Perception, B. Thought, C. Memory, D. Intelligence
A: Perception
Answer: A: Perception 
Explanation: Ans. Perception