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': "Fregoli's Syndrome is? \nSelect and explain. \nA. Delusion of Doubles, B. Delusion of persecution, C. Delusion of twins, D. Delusion of parasites", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e., Delusion of Doubles[Ref.: Kaplan 6 Saddock IF/e Chap. I4The Fregoli delusion, or the delusion of doubles, is a rare disorder in which a person holds a delusional belief that different people are in fact a single person who changes appearance or is in disguise.", 'role': 'assistant'}]