A 5 Year Old Child Is Alert and Sitting Up

A 5 year old child is alert and sitting up, but has an ineffective cough and you hear a crowing sound on inhalation. You should

A) position him in the tripod position in his caregiver's lap.
B) ask him to lie on his back and take several deep breaths.
C) transport him to the hospital with lights and sirens on.
D) suspect a partial obstruction and clear his airway.