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You are part of a leading RPG game development company, operating your gaming server on GKE across multiple pods running on four n1-standard-2 nodes within a GKE cluster. There's a need to deploy additional pods requiring an n2-highmem-16 type node on the same cluster, without causing downtime to your live production app. What is the best course of action?
A
Upgrade the existing nodes in the cluster to a different machine type using gcloud container clusters upgrade before deploying the new services.
B
C
D