In an Avaya Auraâ„¢ Contact Center, what does enabling Open do?

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In an Avaya Auraâ„¢ Contact Center, what does enabling Open do?

A. It permits agents to utilize the Avaya Open Queue© Desktop for agent skills that have agents logged in with the correct training and knowledge sets to handle calls
B. It allows third parties including Contact Center Multimedia (CCMM) to create, read, and delete multimedia and voice contacts in Contact Center Manager Server (CCMS)
C. It gives agents and Call Center supervisors the ability to manage multiple simultaneous contact types such as voice, outbound voice, email, chat, IM and voicemail
D. It provides extended call queuing functionality for the Avaya Auraâ„¢ Contact Center by implementing the same functionality as the Automatic Call Distribution Queue including useful features like visualization