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
All of the following statements are true about obsession except: 
Select and explain. 
A. It is a repetitive thought or image, B. Patient believes that the images or thoughts are imposed by others, C. Content of obsession can be about sex or god, D. Patient gets disturbed when unable to remove the thoughts or images
B: Patient believes that the images or thoughts are imposed by others
Answer: B: Patient believes that the images or thoughts are imposed by others 
Explanation: Obsessions are repetitive thoughts, images or impulses. Often the content of thoughts is about sex or god and patient tries to stop these anxiety provoking thoughts unsuccessfully. Please remember, that a patient with obsession identifies the repetitive thought as his "own thoughts" and not something that is imposed by others. if the patient indeed believes that the thought has been imposed by others, it would then be diagnosed as "thought inseion" and not an obsession.