This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neurotic, Stress Related and Somatoform Disorders, Subject name: Psychiatry
[{'content': 'An obsessive compulsive neurosis patient is likely to develop: \nSelect and explain. \nA. Hallucination, B. Depression, C. Delusion, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Most of the patients with OCD, develop secondary depression. It is the M/C Comorbidity associated with OCD. The lifetime prevalence for major depressive disorder in persons with OCD is 67%.', 'role': 'assistant'}]