According to the Text,which Is True About "Young-Old" Couples' Satisfaction

According to the text,which is true about "young-old" couples' satisfaction?

A) Those who were happy previously continue to be happy.
B) Those who were less satisfied in earlier decades become increasingly dissatisfied.
C) Those who were most happy are likely to experience the greatest decreases in happiness.
D) Conflict increases among couples later in life, regardless of how satisfied they were in their relationships earlier in life.