Some of your production services are running in Google Kubernetes Engine (GKE) in the eu-west-1 region. Your build system runs in the us-west-1 region. You want to push the container images from your build system to a scalable registry to maximize the bandwidth for transferring the images to the cluster. What should you do? 

Answer options:

A. Push the images to Google Container Registry (GCR) using the gcr.io hostname.
B. Push the images to Google Container Registry (GCR) using the us.gcr.io hostname.
C. Push the images to Google Container Registry (GCR) using the eu.gcr.io hostname.
D. Push the images to a private image registry running on a Compute Engine instance in the eu-west-1 region.

B

Reference: https://cloud.google.com/container-registry/docs/pushing-and-pulling