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': 'Best esthetics for a maxillary denture is when: \nSelect and explain. \nA. Anterior teeth are placed on the crest of Alveolar ridge, B. Teeth are placed lingual to the crest of alveolar ridge, C. Teeth are placed facial to alveolar ridge, D. Teeth articulate with mandibular anterior teeth placed over the crest of the ridge', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]