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
Type of schizophrenia with mental retardation: NEET 13 
Select and explain. 
A. Von-Gogh syndrome, B. Paranoid schizophrenia, C. Catatonic schizophrenia, D. Pfropf schizophrenia
D: Pfropf schizophrenia
Answer: D: Pfropf schizophrenia 
Explanation: Ans. Pfropf schizophrenia