What are the benefits when you use MDF Position nomination method instead of the Position nomination method? (There are 2 correct answers to this question)

What are the benefits when you use MDF Position nomination method instead of the Position nomination method? (There are 2 correct answers to this question)
A . You can import successors
B . You can grant position based permissions
C . You can use effective dating
D . You can use MDF talent pools

Answer: C,D