Which tool should you use?

You need to create a RemoteApp and Desktop Connection configuration (.wcx) file.
Which tool should you use?

A.
Remote Desktop Connection Manager

B.
Remote Desktop Gateway Manager

C.
Remote Desktop Session Host Configuration

D.
RemoteApp Manager

Explanation:
Creating a Client Configuration File
To help end users set up RemoteApp and Desktop Connection on a computer that is running Windows 7, you can create a RemoteApp and Desktop Connection configuration file to distribute to end users.
To create a configuration file
1. On the RD Connection Broker server, open Remote Desktop Connection Manager. To open Remote Desktop Connection Manager, click Start, point to Administrative Tools, point to Remote Desktop Services, and then click Remote Desktop Connection Manager.
2. In the left pane, click Remote Desktop Connection Manager: rdcb-srv.
3. On the Action menu, click Create Configuration File.
4. In the Create Configuration File dialog box, in the RAD Connection feed URL box, type https://rdwa-srv.contoso.com/RDWeb/Feed/webfeed.aspx and then click Save.
5. Distribute the configuration file to the end users.
Source: http://technet.microsoft.com/nl-nl/library/dd772689.aspx