Administrators can configure which three of the following load balancing options in GTM? (Choose three.)

Alternate is one of the three valid load balancing options on a GTM Wide IP, used when the Preferred method cannot return a result.

Fallback is the third valid tier, acting as a last-resort load balancing method when both Preferred and Alternate methods fail to return a usable resource.

Required is not a named load balancing tier in GTM Wide IP configuration; GTM uses Preferred, Alternate, and Fallback as its three tiers.

Preferred is the primary load balancing method configured on a Wide IP and is the first method GTM attempts when resolving a DNS query.

Backup is not a valid GTM load balancing tier name; the three valid options are Preferred, Alternate, and Fallback.

Optional is not a valid GTM load balancing option; it does not correspond to any of the three configurable tiers on a Wide IP object.