Choose the thesis structure that should be used when you are simply evaluating t

Choose the thesis structure that should be used when you are simply evaluating the similarities and differences between your topics:

A.While some differences between _______ and _______ are noticeable, there are many similarities. 
B.Although they share some similarities, the differences between ________ and ________ are clear. 
C. There are many similarities and differences between ______ and _______ that deserve evaluation.