Which of the Following Would Be an Example of Obsessive-Compulsive

Which of the following would be an example of obsessive-compulsive disorder?

A) I think about my future goals, and sometimes experience anxiety when I worry that I will not be able to achieve them
B) I am often aggressive and violent unless I have a chance to play video games every day
C) As I am working on a project, I am careful to back up my work
D) I wash my hands often to avoid germs. If a sink and good soap are not available, I start to panic if it's been more than an hour since I last washed.