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
[{'content': 'The following psychopathologies are characteristics of which psychiatric condition; waxy flexibility, negativism and rigidity: \nSelect and explain. \nA. Paranoid schizophrenia, B. Catatonic schizophrenia, C. Hebephrenic schizophrenia, D. Negative schizophrenia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Catatonic schizophrenia is associated with most obvious and dramatic motor disturbances and other features of schizophrenia. Most studies conclude that rates of catatonia in Schizophrenia amounts to around 5%. There is a decline in the diagnosis of catatonic schizophrenia, possibly due to the differences in the diagnostic categories and the availability of more effective psychotropic drugs.Ref: Catatonia: From Psychopathology to Neurobiology By Stanley N. Caroff, 2004, Page 16; Kaplan and Sadock's Synopsis of Psychiatry: By Benjamin J. Sadock, Harol I. Kaplan, Virginia A. Sadock, 2007, Page 541.", 'role': 'assistant'}]