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: Pathology
Epidermal growth factor is required for: 
Select and explain. 
A. Epithelium proliferation and tooth eruption, B. Angiogenesis, C. Collagen formation, D. Fibroblast formation
A: Epithelium proliferation and tooth eruption
Answer: A: Epithelium proliferation and tooth eruption 
Explanation: None