Which statement is a best practice for maintaining fiber optic connectors?

Which statement is a best practice for maintaining fiber optic connectors?

• A. Cleanliness is not important for fiber optic connectors.
• B. Use water-based cleaners on ferrules.
• C. Inspect the end-face visually, but cleaning kits are never needed.
• D. Cleanliness of connectors and ferrules; use proper cleaning kits and lint-free wipes; inspect end-face.

Answer: (D)