A nurse is reinforcing teaching with a client's family about home oxygen use via nasal cannula. Which of the following statements by a family member indicates an understanding of the teaching?

A. Frequently checking the top of the ears for sores is correct. The nasal cannula tubing can cause pressure injuries behind the ears over time. The family should check for redness or sores and use protective padding or adjust the tubing as needed. B. Turning the oxygen up to 10 when the client has trouble breathing is incorrect. Oxygen flow rates should be adjusted only as prescribed by the provider. Increasing the flow rate without guidance can lead to complications, such as oxygen toxicity in clients with chronic respiratory conditions. C. Using petroleum jelly to keep the nares moist is incorrect. Petroleum-based products are flammable and should not be used with oxygen therapy. Instead, a water-based lubricant should be used to prevent nasal dryness. D. Removing the nasal cannula when eating is incorrect. Clients using a nasal cannula can continue wearing it while eating, as it allows them to receive oxygen continuously. If needed, a healthcare provider can recommend adjustments to oxygen flow during meals.