How is this issue resolved?

An employee of company ABC just quit. The IT administrator deleted the employee’s userid from the active directory at 10 a m. on March 4th The nightly sync occurs at 10 p.m daily. The IT administrator wants to troubleshoot and find a way to delete the userid as soon as possible.

How is this issue resolved?
A . Wait until 10 pm on March 4th when the user is automatically removed from Cisco UCM
B . Wait until 10 pm on March 5th when the user is automatically removed from Cisco UC
D . Wait until 3:15 a.m. on March 6th for garbage collection to remove the user from Cisco UC
F . Wait until 3:15 a.m. on March 5th for garbage collection to remove the user from Cisco UCM

Answer: C