Research Has Indicated Which of the Following

Research has indicated which of the following?

A) Satisfaction with marriage decreases with the birth of the first child and does not return to prechildren levels until all the children have left home.
B) Satisfaction with marriage increases with the birth of the first child,stays stable throughout childrearing and drops when the children have left home.
C) Satisfaction with marriage decreases with the birth of the first child and never returns to prechildren levels.
D) Satisfaction with marriage decreases with the birth of the first child,but regains prechildren levels once all of the children are in school.