What should you configure from the Windows Media Services console?

Your network contains a server named Server1.
Server1 has the Streaming Media Services role installed.
The network contains two subnets named Subnet1 and Subnet2.
You create an on-demand publishing point named Publishing1 on Server1.
You need to ensure that only users from Subnet1 can access Publishing1.
What should you configure from the Windows Media Services console?

A.
From the properties of Server1, configure the Limits settings.

B.
From the properties of Server1, configure the Authentication settings.

C.
From the properties of Publishing1, configure the Credentials settings.

D.
From the properties of Publishing1, configure the Authorization settings.

Explanation:
WMS IP Address Authorization
The WMS IP Address Authorization plug-in is used to control access to your content based on client Internet Protocol (IP) addresses. You can add specific IP addresses or ranges of IP addresses for which you want to allow or restrict access. You can configure the following options on the General tab for this plug-in.
Item
Description
Set IP address access permissions
Allow all except those in the Deny list
Select this option to restrict clients from accessing your server based on their IP addresses. If this permission level is set, all clients have access by default.
Deny all except those in the Allow list
Select this option to allow clients to access your server based on their IP addresses. If this permission level is set, all clients do not have access by default.
Restrict as specified in the following lists
Select this option to allow and deny access to the content on your server based on client IP addresses.
Allow
Displays the IP addresses and subnet masks that are allowed to access the content on your publishing points.
* Click Add IP to add an IP address or subnet to the list.
* Click Edit IP to modify an IP address or subnet in the list.
* Click Remove IP to delete an IP address or subnet from the list.
Deny
Displays a list of IP addresses and subnet masks that are not allowed to access the content on your publishing points.
* Click Add IP to add an IP address or subnet to the list.
* Click Edit IP to modify an IP address or subnet in the list.
* Click Remove IP to delete an IP address or subnet from the list.
Source: http://technet.microsoft.com/en-us/library/cc770273.aspx