What is a difference between a dynamic list and a static list?

What is a difference between a dynamic list and a static list?
A . You cannot manually update list membership of a static list but you can manually update list membership of a dynamic list
B . You cannot manually update list membership of a dynamic list but you can manually update list membership of a static list
C . You can add an action to a dynamic list that will trigger when a prospect is added but you cannot add an action to trigger on a static list when a prospect is added
D . Dynamic lists are retroactive while a static list cannot be retroactive

Answer: B