DrPlymouth Is Testing the Intelligence of the Following Pairs of Twins

Multiple Choice

Dr.Plymouth is testing the intelligence of the following pairs of twins: 1 - Penny and Benny are identical twins raised apart from birth
2 - Polly and Molly are identical twins raised together
3 - Perry and Kerry are fraternal twins raised together
Rank these twins according to those who would MOST likely score the same on the intelligence test to those who would LEAST likely score the same.

A) 2 - 3 - 1
B) 2 - 1 - 3
C) 3 - 2 - 1
D) 1 = 2 - 3 (i.e., 1 & 2 are the same and both are more similar than 3)