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
[{'content': 'Epidermal growth factor is required for: \nSelect and explain. \nA. Epithelium proliferation and tooth eruption, B. Angiogenesis, C. Collagen formation, D. Fibroblast formation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]