This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Schizophrenia Spectrum and Other Psychotic Disorders, Subject name: Psychiatry
Which statement is not true about hallucinations? 
Select and explain. 
A. It is as vivid as a real perception, B. It occurs in inner subjective space, C. It is independent of will of observer, D. It occurs in the absence of any perceptual stimulus
B: It occurs in inner subjective space
Answer: B: It occurs in inner subjective space 
Explanation: Criteria for hallucination Occur in the absence of any object or stimulus Hallucination are as vivid as a real perception Occur in outer and objective space Not in the control of patient Inner & subjective space - pseudo hallucination M/c hallucination - auditory hallucination Tactile hallucination is seen in cocaine intoxication known as cocaine bug or formication or Mangan phenomenon