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
Gingival index was given by 
Select and explain. 
A. Sillness and glass, B. Loe and sillness, C. Glass and loe, D. Loben and sillness
B: Loe and sillness
Answer: B: Loe and sillness 
Explanation: None