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': 'A patient with obsessive - compulsive neurosis is more likely to develop : \nSelect and explain. \nA. Depression, B. Schizophrenia, C. Delusional disorders, D. Conversion syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: About one - third of patients with OCD have major depressive disorder and suicide is a risk for all patients with OCD.', 'role': 'assistant'}]