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
All are negative symptoms of schizophrenia, except: NIMHANS 08; UPSC 11; COMEDK 14 
Select and explain. 
A. Anhedonia, B. Hallucination, C. Alogia, D. Affective flattening
B: Hallucination
Answer: B: Hallucination 
Explanation: Ans. Hallucination