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
Decreased interincisal angle indicates: 
Select and explain. 
A. Retrusion of teeth, B. Protrusion of teeth, C. Vertical overlap, D. Horizontal overlap
B: Protrusion of teeth
Answer: B: Protrusion of teeth 
Explanation: None