Keith and Kirk Are Identical Twins Who Were Separated at Birth

Keith and Kirk are identical twins who were separated at birth and raised in different parts of the country in different environments. When as adults they were reunited, researchers compared them on several psychological characteristics. Compared to identical twins that have been raised together, Keith and Kirk probably have:

A) as much in common on their psychological characteristics had they been fraternal twins
B) the same level of similarity from those raised together
C) even more characteristics in common than if they were raised together
D) fewer characteristics in common because of different environmental influences