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 minimum mesiodistal space required for placement of two standard diameter implants (4.0 mm diameter) between teeth is \nSelect and explain. \nA. 8 mm, B. 20 mm, C. 10 mm, D. 14 mm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]