You work as the enterprise exchange administrator at Xxx .The Xxx network consists of a domain named xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.The Xxx network contains a server named XXX-EX10.You receive instruction from Xxx to add the Hub Transport Server role on XXX-EX10.What command can be used for installing the Hub Transport Server role？（）

• A、You should run the setup /ps.
• B、You should run the Setup.com /M：Install /R：HT.
• C、You should run the setup.exe.
• D、You should run the scanforfeature.