All Computers in the London Office Are Configured to Use

All computers in the London office are configured to use S10 as their preferred DNS server. The Texas branch office has a server named S11 which hosts a primary zone named payroll.Globe.com. The refresh interval of the payroll.Globe.com zone is set to 24 hours. In the Texas office, a firewall filters all incoming network traffic from other offices. A rule on this firewall prevents all computers from the London office network, except S10, from performing DNS lookups against S11.
As a business requirement no delay should occur between the time that a new record is created in the payroll.Globe.com zone and the time that the record can be resolved from any computers in the London office. All computers in the London office must be able to resolve names in the payroll.Globe.com namespace.
Which of the following should be done to configure DNS on S10 to meet the requirements?

A) Setup a stub zone named payroll.Globe.com.
B) Setup conditional forwarding to S11 for the payroll.Globe.com namespace.
C) In the Globe.com zone, set up a delegation to the payroll.Globe.com zone on S11.
D) Setup a secondary zone named payroll.Globe.com that has S11 as master.