Following 2 minutes of CPR, you reassess an unresponsive man's pulse and cardiac rhythm. He remains pulseless and the monitor displays coarse ventricular fibrillation. You should:

A. perform 2 minutes of CPR and then reassess.
B. continue CPR and intubate his trachea.
C. continue CPR and establish IV or IO access.
D. resume CPR as the defibrillator is charging.