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
Patient presents with waxy flexibility, negativism & rigidity diagnosis is - 
Select and explain. 
A. Paranoid schizophrenia, B. Catatonic schizophrenia, C. Hebephrenic Schizophrenia, D. Simple Schizophrenia
B: Catatonic schizophrenia
Answer: B: Catatonic schizophrenia 
Explanation: None