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 most accepted cause for late incisor crowding is 
Select and explain. 
A. Late mandibular growth, B. Pressure from third molar, C. Lack of normal attrition, D. Lingual eruption of mandibular incisors
A: Late mandibular growth
Answer: A: Late mandibular growth 
Explanation: None