Following the death of their parents ten years ago, identical twins Glenda and Brenda were placed in an understaffed orphanage. Brenda remained in the orphanage while Glenda was adopted by a loving middle-class couple. Which of the following would be LEAST likely to occur?
A) Glenda will have a higher IQ than Brenda
B) Glenda and Brenda will have the same reaction range for intelligence
C) Brenda will have an IQ near the upper limit of her reaction range
D) Glenda and Brenda will have IQs that differ by ten or more IQ points
