How Did the Flagellants Respond to the Black Death

How did the flagellants respond to the Black Death?

A) They dedicated themselves to caring for the ill and burying the dead, risking infection themselves as a form of Christian service.
B) They fled to mountain retreats they had prepared in case of war, where stored food permitted them to survive in hiding.
C) They whipped and scourged their bodies as penance, believing that the Black Death was God's punishment for humanity's wickedness.
D) They prayed and fasted with the hope that God would bring the plague to an end.