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: Dental
[{'content': 'Tick the odd one out \nSelect and explain. \nA. Degassing, B. Desorbing, C. annealing, D. Metalizing', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]