What automatic workflow can be created to prevent them from getting assigned?

There are a number of unassigned prospects in the Lenoxsoft database that have NOT been active in more than 60 days. An automation rule is set to assign prospects once they reach a score of 100.

What automatic workflow can be created to prevent them from getting assigned?
A . Create an automation rule based on the prospects time to adjust their score to 0 if they haven’t been active in 60 days.
B . Create a dynamic list based on the prospects time to adjust their score to 0 if they haven’t been active in 60 days.
C . Create a completion action based on the prospects time to adjust their score to 0 if they haven’t been active in 60 days.
D . Create a segmentation rule based on the prospects time to adjust their score to 0 if they haven’t been active in 60 days.

Answer: A