A patient has inhaled cyanide gas. He is alert and complaining of shortness of breath. His airway is patent, his breathing is adequate, and his radial pulse is strong. His skin is warm and dry, and his breath sounds are clear. Given these assessment findings, what should the EMT do first?

A) Administer the antidote for cyanide.
B) Monitor the patient and transport.
C) Obtain vital signs with the patient in a supine position.
D) Administer oxygen via nonrebreather mask.

D