The line labeled "C", as shown in the illustration would be identified as the ______. Illustration GS-0175

Correct Answer: Option C — clean water inlet line

In standard oily-water separator diagrams, the clean water inlet is utilized for backflushing or cleaning the coalescer elements. Line 'C' serves this function, allowing fresh water to enter the system to remove accumulated sediment and oil residue from the filter media, maintaining separator efficiency and compliance with MARPOL.