A company is deploying a new application on Oracle Cloud Infrastructure and has set up a load balancer with multiple backend servers. The team is configuring health checks for the backend set to ensure that only healthy servers receive traffic. They are considering the following configurations for the health check: 1. An HTTP health check that verifies the response from a specific URL path. 2. A TCP health check that simply checks if the port is open. 3. A combination of both HTTP and TCP health checks for redundancy. 4. A health check that only checks the server\'s CPU utilization. Which configuration would best ensure that the load balancer effectively routes traffic only to healthy backend servers?