You support a stateless web-based API that is deployed on a single Compute Engine instance in the europe-west2-a zone. The Service Level Indicator (SLI) for service availability is below the specified Service Level Objective (SLO). A postmortem has revealed that requests to the API regularly time out. The time outs are due to the API having a high number of requests and running out memory. You want to improve service availability .
What should you do?
A . Change the specified SLO to match the measured SL
C . Move the service to higher-specification compute instances with more memory.
D . Set up additional service instances in other zones and load balance the traffic between all instances.
E . Set up additional service instances in other zones and use them as a failover in case the primary instance is unavailable.
Answer: C
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