Which two steps resolve the “Users with Duplicate User IDs” message?

Refer to the exhibit.

Which two steps resolve the “Users with Duplicate User IDs” message? (Choose two.)
A . Rename the directory URI value for one of the users to ensure that there is no duplication.
B . Rename the User ID value for one user if different users on different clusters have the same User ID assigned.
C . Unassign a user from one of the clusters when the same user is assigned to two different clusters.
D . Assign the duplicate user to the secondary Cisco IM and Presence node.
E . Delete the user ID for the duplicate user I

Answer: BC

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/im_presence/configAdminGuide/10_0_1/CUP0_BK_C318987B_00_config-admin-guide-imp-100/CUP0_BK_C318987B_00_config-admin-guide-imp-100_chapter_010101.html