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
Clinical signs of gingivitis appear in 
Select and explain. 
A. Initial gingivitis, B. Early gingivitis, C. Late gingivitis, D. Advanced gingivitis
B: Early gingivitis
Answer: B: Early gingivitis 
Explanation: None