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': 'The melting temperature of material marked with arrow is: \nSelect and explain. \nA. 50.0°C to 51.1°C, B. 53.3°C to 54.4°C, C. 54.4°C to 55.6°C, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]