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': 'Dissociative conversion disorder was previously described as - \nSelect and explain. \nA. Hysteria, B. Dementia precox, C. Melancholia, D. Hypochondriasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The term "hysteria" which was once prevalent is no more in use. Instead, these disorders are now called dissociation or conversion disorders.', 'role': 'assistant'}]