A postoperative client with a nasogastric tube (NGT) to low-intermittent suction reports the onset of nausea. Which action should the practical nurse take first

A. Auscultating for bowel sounds might be important, but checking the NGT suction status is a priority when a client with an NGT reports nausea to ensure proper functioning and appropriate suction level. B. Ensuring the NGT suction is working properly addresses the immediate concern of potential gastric accumulation contributing to nausea. C. Administering an antiemetic might provide relief, but assessing the NGT function takes priority to address the cause. D. Observing the color of gastric drainage is essential but comes after verifying the NGT suction functioning in the context of the reported nausea.