You are the network administrator for Contoso, Ltd.The network consists of a single Windows Server 2003 DNS zone named contoso.com.The network topology is shown in the exhibit.

All network servers run Windows Server 2003. All IP addresses are statically assigned.The primary DNS zone for contoso.com is hosted on a server at the company’s main office in Cairo.Secondary zones for contoso.com are hosted on servers in the branch offices.

Another administrator reports that network utilization is at 90 percent of capacity.You reconfigure the refresh interval and the minimum default Time to Live (TTL) interval for the contoso.com zone, as shown in the following table.

You need to configure the start of authority (SOA) resource record properties for the contoso.com zone.You also need to ensure that the server in the Cairo office will continue to attempt zone transfers if an initial attempt fails.

What should you do?

A.
Configure the contoso.com zone to expire after 1 hour.

B.
Configure the contoso.com zone to expire after 4 hours.

C.
Configure the contoso.com zone to expire after 20 seconds.

D.
Configure the retry interval to be 1 hour.

E.
Configure the retry interval to be 4 hours.

F.
Configure the retry interval to be 20 seconds.