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
The minimum mesiodistal space required for placement of two standard diameter implants (4.0 mm diameter) between teeth is 
Select and explain. 
A. 8 mm, B. 20 mm, C. 10 mm, D. 14 mm
D: 14 mm
Answer: D: 14 mm 
Explanation: None