What was the message behind a phrase like “to die from the bite of frost is far more glorious than at the hands of a mob” in relation to african american migration?

a. the weather in the north was far more severe than in the south.
b. racial hatred in the north was far less than what african americans endured in the south.
c. the risk of unsuccessful migration was far better than living in fear of violence in the south.
d. deaths from natural causes in the north were much more common than deaths from racial violence in the south.