In a Study of Identical Twins,where One Twin Was Divorced

In a study of identical twins,where one twin was divorced and the other was not,the children of the divorced twin experienced more emotional difficulties compared to their cousins from the intact family of the other twin.Given the results of this study,we can conclude that the effects of divorce on children are

A) largely attributable to genetic risk.
B) not exclusively attributable to genetic risk.
C) largely attributable to the age of the child.
D) largely offset by the presence of close relationships with the intact twin's family.