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 developing hatredness towards his brother starts, overcaring him and brings gifts to him.This is an example of \nSelect and explain. \nA. Sublimation, B. Passive aggression, C. Reaction formation, D. Dissociation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Reaction formation is a neurotic defense mechanism where an individual transforms his feelings into exact opposite.', 'role': 'assistant'}]