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
Anterior guidance is absent in all, except: 
Select and explain. 
A. Anterior open bite, B. Posterior open bite, C. Increased overjet with class II, D. Reverse overjet and overbite (class III)
D: Reverse overjet and overbite (class III)
Answer: D: Reverse overjet and overbite (class III) 
Explanation: None