A 6yo child is brought in after rescue from a housefire. He is unconscious, and has soot in his nares. You perform rapid sequence intubation. Vital signs are: Temp 37.5, HR 120, BP 68/40, O2 saturation 100%. You note a cherry red color to his skin. What is the antidote most indicated?

A. Methylene blue

B. 2-PAM

C. Hydroxocobalamin

D. Sodium bicarbonate

E. Naloxone