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
Grimacing and Mannerism is: 
Select and explain. 
A. Simple Schizophrenia, B. Catatonic Schizophrenia, C. Hebephrenic Schizophrenia, D. Phobia
B: Catatonic Schizophrenia
Answer: B: Catatonic Schizophrenia 
Explanation: B i.e. Catatonic schizophrenia