When the agent attempts to log into the Avaya Aura Agent Desktop (AAAD) for the first time, an "Invalid Credentials" err

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When the agent attempts to log into the Avaya Aura Agent Desktop (AAAD) for the first time, an "Invalid Credentials" error message is displayed.
What is the cause of the error?

A. The Windows account that the agent has used to log on to the computer is not mapped to an address in Communication Control Toolkit (CCT).
B. The password set for the agent in Contact Center Multimedia (CCMM) does not match I password the agent is using in AAAD.
C. The Voice URI assigned to the agent in Contact Center Manager Administration (CCMA) is incorrect.
D. The SSL certificate used to secure CCT communications is not installed on the agent's computer.