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 person missing from home is found wandering purposefully. He is well groomed and denies of having any amnesia. Most likely diagnosis is- \nSelect and explain. \nA. Dementia, B. Dissociative amnesia, C. Dissociative fugue, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]