The Textbook Discusses the Famous Minnesota Twin Project

The textbook discusses the famous Minnesota Twin Project.Which of the following would best describe a conclusion that could be drawn from this study?

A) Twins are more likely to experience a shared environment than a nonshared environment.
B) Monozygotic twins are more likely to experience a shared environment than are dizygotic twins.
C) There are more similarities among biological relatives than among adoptive relatives.
D) There are more similarities between monozygotic twins than between dizygotic twins.