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: Surgery
Which of the following is considered the highest and most severe classification of maxillary fracture? 
Select and explain. 
A. LeFort I, B. LeFort II, C. LeFort III, D. LeFort IV
C: LeFort III
Answer: C: LeFort III 
Explanation: Maxillary fractures may be classified as LeFort I, II, or III. The LeFort III is the highest and most severe.