Of These,which Is Most Likely to Either Increase or Decrease

Of these,which is most likely to either increase or decrease happiness for a period of years?​

A) Divorce or widowhood produces a long-lasting decrease in happiness.
B) ​Moving to a warmer climate produces a long-lasting increase in happiness.
C) ​Growing older leads to a gradual but permanent decrease in happiness.
D) ​Winning a lottery leads to a long-lasting increase in happiness.