Ans: B. Greenused for routine blood transfusions, transfusing large volumes of fluid, intravenous feeding of patients and the harvesting and separation of stem cells.Refi ATLS 18th edn; 2018, Chapter 3 ShockColorSizeExternal diameter(mm)Length(mm)Water flow rate (mL/min)Recommended usesOrange14G2.1 mm45 mm-240 mL/minTrauma, rapid blood transfusion, surgeryGray16G1.8 mm45 mm--180 mL/minRapid fluid replacement, trauma, rapid blood transfusionGreen18G1.3 mm32 mm--90 mL/minLarge volumes of fluid, Rapid fluid replacement, trauma, rapid blood transfusionPink20G1.1 mm32 mm--60 mL/minMost infusions, rapid fluid replacement, trauma, routine blood transfusionBlue22G0.9 mm25 mm--36 mL/minMost infusionsNeonate, pediatric, older adults routine blood transfusion Yellow 24G 0.7 mm 19 mm --20 mL/minMost infusions neonate, pediatric, older adults, routine blood transfusion, neonate or pediatric blood transfusion Purple 26G 0.6 mm 19 mm --13 mL/minPediatrics, Neonate