Which Statement Is True About Grandparents

Which statement is true about grandparents?

A) Grandparents who take full responsibility for young children rarely experience emotional strain.
B) Relationships with daughters- or sons-in-law strongly affect the closeness of grandchild ties.
C) In higher-income families, grandparents are more likely to perform essential activities.
D) Grandfathers report higher satisfaction with the grandparent role than grandmothers.