After Successive Abdominal Thrusts, the Patient Becomes Unconscious and the Airway

After successive abdominal thrusts, the patient becomes unconscious and the airway still appears obstructed. What is the next appropriate action?

A) Rescuer should move the patient to the ground, activate EMS system, and begin CPR.
B) Halt efforts to clear the airway and decompress the stomach.
C) Try to remove the obstructing material manually (finger sweep) .
D) Immediately apply a series of strong back blows to the patient.