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
Grossly disorganised, severe personality deterioration and worst prognosis is seen is : 
Select and explain. 
A. Hebephrenic, B. Catatonic, C. Simple, D. Paranoid
A: Hebephrenic
Answer: A: Hebephrenic 
Explanation: A. i.e. Hebephrenic