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
Catatonic features are seen in schizophrenia they are also seen in -a) Severe depressionb) Conversion disorderc) Personality disorder d) Somatisation disorder 
Select and explain. 
A. ac, B. a, C. ab, D. bc
C: ab
Answer: C: ab 
Explanation: Catatonia is seen in Schizophrenia (most common), depression, mania, conversion-dissociative disorders, reactive psychosis, hypnosis, anxiety disorders and many medical disorders.