When using static proximity load-balancing method for a Global Server Load Balancing (GSLB) virtual server, there must be a match between the IP addresses in the custom/static database to the IP address of the _________ so that it is associated with a given location. (Choose the correct option to complete the sentence.)
A. GSLB service
B. ADNS service
C. Load-balancing server
D. Client local DNS (LDNS)