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': 'Fear to contamination, counting behaviours, and having to check and recheck are features characteristic of - \nSelect and explain. \nA. Panic attacks, B. Agoraphobia, C. Obsessive-compulsive disorder, D. Generalized anxiety disorder', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]