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': 'Implant predictability regarding occlusion is lowest for which patient? \nSelect and explain. \nA. Edentulous patient, B. Partly edentulous patient, C. Both of the above, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]