You work as an administrator at ENSUREPASS.com. The ENSUREPASS.com network consists of  a single domain named ENSUREPASS.com. All servers on the ENSUREPASS.com network have  Windows Server 2012 installed. ENSUREPASS.com has a server， named ENSUREPASS-SR07， which has the AD DS， DHCP， and DNS server roles installed. ENSUREPASS.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 a filter on ENSUREPASS-SR07.  Which of the following is a reason for this configuration？（）

• A、To make sure that ENSUREPASS-SR07 issues ENSUREPASS-SR09 an IP address
• B、To make sure that ENSUREPASS-SR07 does not issue ENSUREPASS-SR09 an IP address
• C、To make sure that ENSUREPASS-SR09 acquires a constant IP address from ENSUREPASS-SR08 only
• D、To make sure that ENSUREPASS-SR09 is configured with a static IP address