When giving compressions, rescuers should switch compressors after every ___ cycles of CPR (about every ___ minutes), or sooner if fatigued.
A) After every 2 cycles of CPR (about every 4 minutes)
B) After every 3 cycles of CPR (about every 6 minutes)
C) After every 5 cycles of CPR (about every 10 minutes)
D) After every 10 cycles of CPR (about every 20 minutes)
