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': 'Dental pulp is \nSelect and explain. \nA. Loose connective tissue, B. Connective tissue, C. Nurishing tissue, D. Hard tissue cavity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]