Which three of the metrics listed below can GTM use when making load balancing decisions for a client? (Choose three.)

GTM operates at the DNS resolution layer and never inspects the content of TCP payloads, which are application-level data inaccessible during DNS-based load balancing.

IP geolocation allows GTM to map a client's IP address to a geographic region and direct DNS responses toward the nearest or most appropriate data center. This reduces latency and improves user experience by routing based on physical or logical proximity.

Hop count measures the number of routing hops between a client and a resource, enabling GTM to prefer topologically closer data centers. This network path metric helps GTM avoid unnecessarily long or complex routes when multiple sites are available.

Round trip time (RTT) quantifies the network latency between a client and a given resource, allowing GTM to select the fastest-responding site. GTM probes resources using this metric so DNS responses direct clients to the lowest-latency available endpoint.

Browser user agent is an HTTP request header that GTM does not evaluate, as GTM decisions occur at the DNS layer before any HTTP session is established.