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
In gingival index score 2 means: 
Select and explain. 
A. Bleeding on slight provocation, B. Spontaneous bleeding, C. Colour change in gingiva, D. No change in gingiva
A: Bleeding on slight provocation
Answer: A: Bleeding on slight provocation 
Explanation: None