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
All of the following feature of hallucination EXCEPT? 
Select and explain. 
A. Depends on will of observer and is under voluntary control, B. Occur in inner subjective space, C. It is vivid as sensory perception, D. It occurs in absence of perceptual stimulus
A: Depends on will of observer and is under voluntary control
Answer: A: Depends on will of observer and is under voluntary control 
Explanation: A i.e. Depends on will of observer