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': "Delusion of infidelity of pa of the sexual paner is known as: \nSelect and explain. \nA. De Clerambault's syndrome, B. Couvade syndrome, C. Othello syndrome, D. Ekbim's syndrome", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C. i.e. Othello syndrome', 'role': 'assistant'}]