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': 'Indirect pulp capping procedures on primary molars are\nindicated when: \nSelect and explain. \nA. Removal of decay has exposed the pulp, B. A tooth has a Larger long-standing lesion with a history of continuous pain, C. The carious lesion has just penetrated the dentinoenamel junction, D. The carious lesion is suspected of producing an exposure of the pulp', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]