Which of the Following Are Contraindications for Sealants

Multiple Choice

Which of the following are contraindications for sealants?
1) Teeth with shallow open grooves
2) Occlusal pits and fissures of non-carious primary teeth
3) Teeth with well-coalesced pits and fissures
4) Teeth that have been caries-free for 4 or more years

A) 1, 2, 3, 4
B) 1, 3, 4
C) 1, 2
D) 1, 2, 3