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
The colorless or transparent pit and fissure sealants are usually 
Select and explain. 
A. Indicated only in case of rampant caries, B. Accepted even though retention is limited, C. Limited to buccal pits, D. Indicated only before six years of age
B: Accepted even though retention is limited
Answer: B: Accepted even though retention is limited 
Explanation: None