[A5] Your company has a Microsoft Office 365 subscription. The company uses Microsoft Lync Online. You need to ensure that Lync Online users can use dial-in conferencing. The solution must minimize costs.
What should you do?
A. Deploy an Edge Server and add a hosting provider to the server.
B. Deploy an Edge Server and configure the A/V Edge service on the server.
C. Deploy an A/V Conferencing pool.
D. Set up an account with a third-party audio conferencing provider.
