A nurse is talking with a client who has cholelithiasis and is about to undergo an oral cholangiogram. Which of the following client statements indicates to the nurse understanding of the procedure?

Choice A reason: This statement describes extracorporeal shock wave lithotripsy (ESWL), a procedure used to break up kidney stones or gallstones using sound waves. It is not related to an oral cholangiogram, which is a diagnostic imaging procedure. Choice B reason: This statement refers to endoscopic retrograde cholangiopancreatography (ERCP), where a camera is inserted through the throat to visualize the biliary tree. An oral cholangiogram, however, involves ingestion of contrast dye followed by X-ray imaging. Choice C reason: This statement accurately reflects the purpose of an oral cholangiogram. The procedure involves taking an oral contrast agent that concentrates in the bile, allowing radiographic visualization of the gallbladder and bile ducts to detect stones, strictures, or other abnormalities. Choice D reason: This statement describes a therapeutic intervention such as gallstone dissolution therapy, which involves medications like ursodiol. It is not part of the oral cholangiogram procedure, which is purely diagnostic.