A Nurse Is Caring for a Patient with a Nasogastric $89 \%$

A nurse is caring for a patient with a nasogastric tube for feeding. During shift assessment, the nurse auscultates a new onset of bilateral lung crackles and notes a respiratory rate of 30 breaths per minute. The patients oxygen saturation is $89 \%$ by pulse oximetry. After ensuring the patients immediate safety, what is the nurses most appropriate action?

A) Perform chest physiotherapy.
B) Reduce the height of the patients bed and remove the NG tube.
C) Liaise with the dietitian to obtain a feeding solution with lower osmolarity.
D) Report possible signs of aspiration pneumonia to the primary care provider.