The nurse is assessing a client with gallstones for jaundice. Which action should the nurse perform to confirm this information?

A. Icterus, or yellowing of the sclera, is a key sign of jaundice, which occurs when there is an excess of bilirubin in the blood. B. Serum bilirubin levels are important for diagnosis but are not an immediate physical assessment. C. Dark urine can suggest liver or bile duct issues but is not definitive for jaundice. D. Pallor of the conjunctiva indicates anemia, not jaundice.