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 color code for the "Regular" size pins in the TMS (Thread Mate System) pins system is \nSelect and explain. \nA. Gold, B. Silver, C. Pink, D. Red', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The Thread Mate System (TMS) pins', 'role': 'assistant'}]