What should the system administrator investigate to determine the cause of this error message?

A domain user is granted access and could successfully log into the hub yesterday.

The same domain user attempts to log in into the hub today, and receives this error message:

Your account is inactive. Contact your administrator to activate it.

The user is able to successfully log into the Windows domain network. The user did NOT change the password recently. The user has NO limited working hours in the Active Directory.

What should the system administrator investigate to determine the cause of this error message?
A . The user properties in the QMC
B . The Qlik Sense proxy logs
C . The security rules which impact the user
D . The Windows event viewer

Answer: A