What does SCO stand for?

• A. Surface Contaminated Object
• B. SCO-1 Object
• C. SCO-2 Object
• D. Contaminated Surface Object

Answer: (A)

Understanding SCO means recognizing the terminology used to classify items with hazardous residues on their surface. Surface Contaminated Object describes an object that has been contaminated on its exterior by dangerous goods, which can transfer residues during handling or transport. This designation guides how the item is packaged, marked, and handled. The other options don’t reflect the standard wording: they introduce nonstandard variants like “SCO-1” or “SCO-2,” or they reorder the words to “Contaminated Surface Object,” which isn’t the official term.