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
Preventive resin restorations are indicated in ? 
Select and explain. 
A. Non-cavitated pit and fissures, B. Deep caries to prevent progress of lesion, C. Cavitated fissures which require restoration, D. Wide cavity to prevent cusp fracture
C: Cavitated fissures which require restoration
Answer: C: Cavitated fissures which require restoration 
Explanation: None