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: Medicine
Astasia - Abasia is seen in - 
Select and explain. 
A. Parkinsonism, B. Alzeihmer's, C. Schizophrenia, D. Hysterical conversion disorder
D: Hysterical conversion disorder
Answer: D: Hysterical conversion disorder 
Explanation: None