You need to identify the computers that you can use to upgrade the topology to support Skype for Business Server 2015.
What are two possible ways to achieve the goal? Each correct answer presents a complete solution.
A . On NYCMGMT1, uninstall the Lync Server administrative tools, and install Skype for Business Server 2015 administrative tools.
B . On SYDSERVER01, install the Lync Server 2013 administrative tools and upgrade to the latest cumulative update.
C . On SHSERVER01, install the Skype for Business Server 2015 administrative tools.
D . On NYCMGMT1, upgrade the Administrative tools to the latest Lync Server 2013 cumulative update.
Answer: B, D