You have been called to an industrial warehouse for a young adult male patient who was exposed to an unknown chemical gas. The patient was immediately removed from the environment and presents to you with a patent airway, burning to the throat with inspiration, and complaint of shortness of breath. His vital signs are pulse, 120; respirations, 28 breaths/min; blood pressure, 164/60 mmHg; and SpO2, 90%. In addition, you note bilateral wheezing to the lungs. What should be your first action in caring for this patient?

A) Initiate manual spinal motion restriction
B) Administer supplemental oxygen
C) Identify the chemical to which the patient was exposed
D) Administer a saline mist through a small-volume nebulizer

B) Administer supplemental oxygen