A Citrix Administrator configured global server load balancing (GSLB) for www.citrix.com, with two ADNS services named Citrix ADC 1 and Citrix ADC 2 in the setup.

Which record does the administrator need to add on the parent DNS server to delegate requests from www.citrix.com to Citrix ADC 1 and Citrix ADC 2?

A. Canonical Name (CNAME)

B. Address (A) record

C. Name Server (NS) record

D. Pointer Record (PTR)

Reference: https://docs.citrix.com/en-us/citrix-adc/current-release/dns/configure-citrix-adc-adns-server.html