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': 'Normal color of healthy gingiva in children: \nSelect and explain. \nA. Pink, B. Red, C. Coral pink, D. Pale (light) pink', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]