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To scale the frontend deployment of your NGINX-based application on Google Kubernetes Engine (GKE) exposed via an HTTP Google Cloud Load Balancer (GCLB) ingress, which Service Level Indicator (SLI) should you use?
A
Configure the horizontal pod autoscaler to use the average response time from the Liveness and Readiness probes.
B
Configure the vertical pod autoscaler in GKE and enable the cluster autoscaler to scale the cluster as pods expand.
C
Install the Stackdriver custom metrics adapter and configure a horizontal pod autoscaler to use the number of requests provided by the GCLB.
D
Expose the NGINX stats endpoint and configure the horizontal pod autoscaler to use the request metrics exposed by the NGINX deployment.
