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
A person missing from home is found wandering purposefully. He is well groomed and denies of having any amnesia. Most likely diagnosis is- 
Select and explain. 
A. Dementia, B. Dissociative amnesia, C. Dissociative fugue, D. Schizophrenia
C: Dissociative fugue
Answer: C: Dissociative fugue 
Explanation: None