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 junctional epithelium is attached to the tooth by: \nSelect and explain. \nA. Basal lamina, B. Desmosomes, C. Enamel cuticle, D. Nasmyth's membrane", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]