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
Which of the following is not a Schindler's first rank symptom: 
Select and explain. 
A. Passivity phenomenon, B. Auditory hallucinations, C. Delusion of self-reference, D. Delusional perception
C: Delusion of self-reference
Answer: C: Delusion of self-reference 
Explanation: Delusion of self-reference