I would choose A. My life is way more important than a criminal's life

YOU'RE A COP AND A PERSON COMES RUNNING UP TO YOU WITH A KNIFE. WHAT DO YOU DO? DO YOU:; A: FIGHT BACK WITH A WEAPON/GUN TO PROTECT YOUR LIFE? B: FLEE; C: CALL FOR HELP; D: JUST STAND THERE AND LET YOURSELF GET STABBED TO DEATH LIKE THE LIBERALS INTEND TO