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
Which of the following malocclusions are more prone to fracture of incisors 
Select and explain. 
A. Class I Crowding, B. Class II Div. 1, C. Class II Div 2, D. Class III
B: Class II Div. 1
Answer: B: Class II Div. 1 
Explanation: None