Srimad Bhagavatam: Canto 12, Chapter 03 – The Bhumi Gita

06. The characteristics of Kali-Yuga is

a)   Servants will abandon a master who has lost his wealth even if master is a saintly person
b)   Masters will abandon incapacitated servant, even if that servant is in the family for generations
c)   Cows will be abandoned or killed when they stop giving milk
d)   All the above