Which of the Following Is an Accurate Statement About Conclusions

Which of the following is an accurate statement about conclusions based on twin studies?

A) Because identical twins have the same genotype,similarities can be linked to genetic influences,while differences can be linked to environmental factors.
B) Identical twins are similar because of their common genes,while fraternal twins are as different as non-twin siblings.
C) Similarities cannot be attributed to genetics exclusively,because the environment for identical twins is often more similar than for fraternal twins or siblings.
D) Identical twins are the best subjects for teasing apart the effects of nature and nurture.