A patient was eating dinner when a piece of food became caught in his throat. Although coughing has failed to remove the food, he remains able to move an adequate amount of air into and out of his lungs. A nasal cannula has been applied and vital signs are stable. During transport, the patient suddenly begins to exhibit stridorous respirations. Your immediate action should be to:

A) Continue care and transport
B) Start positive pressure ventilation
C) Perform abdominal thrusts
D) Place the patient supine and suction his airway

C) Perform abdominal thrusts