In Comparing Both Animal Studies and Twin Studies, Researchers Feel

In comparing both animal studies and twin studies, researchers feel confident in the finding that

A) animals and humans have similar gene-environment interactions on a few traits.
B) humans experience a stronger gene-environment interaction than animals.
C) animals' genetic contribution is higher for nearly every trait in comparison with humans.
D) the same principles of gene-environment interactions observed in animals apply to humans.
E) animals' genetic contribution is lower for nearly every trait in comparison with humans.