Which of the following is a reason for this configuration?

You work as an administrator at Contoso.com. The Contoso.com network consists of a single domain named Contoso.com. All servers on the Contoso.com
network have Windows Server 2012 R2 installed.
Contoso.com has a server, named ENSUREPASS-SR07, which has the ADDS, DHCP, and DNS server roles installed. Contoso.com also has a server, named
ENSUREPASS-SR08, which has the DHCP, and Remote Access server roles installed. You have configured a server, which has the File and Storage Services
server role installed, to automatically acquire an IP address. The server is named ENSUREPASSSR09.
You then create reservation on ENSUREPASS-SR07, and a filter on ENSUREPASS-SR08.
Which of the following is a reason for this configuration?

A.
It allows ENSUREPASS-SR09 to acquire a constant IP address from ENSUREPASS-SR08 only.

B.
It configures ENSUREPASS-SR09 with a static IP address.

C.
It allows ENSUREPASS-SR09 to acquire a constant IP address from ENSUREPASS-SR07 and ENSUREPASSSR08.

D.
It allows ENSUREPASS-SR09 to acquire a constant IP address from ENSUREPASS-SR07 only.

Explanation:
To configure the Deny filter
In the DHCP console tree of DHCP Server 1, under IPv4, click Filters, right-click Deny under Filters, and then click New Filter. In the New Deny Filter dialog box, in
MAC Address, enter a six hexadecimal number representing the MAC or physical address of DHCP Client 2, click Add, and then click Close. Under Filters right-click
the Deny node, and then click the Enable pop-up menu item.