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
18 years old male hears voices discussing him in 3rd person has 
Select and explain. 
A. Obsession, B. Depression, C. Mania, D. Schizophrenia
D: Schizophrenia
Answer: D: Schizophrenia 
Explanation: Voices discussing the person in 3rd person (third person hallucination) is characteristic of schizophrenia.