Which configuration informs a user by email when an assignment is added to the user's worklist?

Which configuration informs a user by email when an assignment is added to the user’s worklist?

Which configuration informs a user by email when an assignment is added to the user’s worklist?
A . Configure the case type to send assignment notifications to assigned users.
B . Add a Send Notification step to the process after the assignment to notify the assigned user.
C . Configure a service level to send a notification to the assigned user.
D . Add a Send Email step to the process after the assignment to notify the assigned user.

Answer: A