Which command should you execute?

You have configured a Compute Engine virtual machine instance as a NAT gateway. You execute the following command: gcloud compute routes create no-ip-internet-route
–network custom-network1
–destination-range 0.0.0.0/0
–next-hop instance nat-gateway
–next-hop instance-zone us-central1-a –tags no-ip –priority 800
You want existing instances to use the new NAT gateway.
Which command should you execute?
A. sudo sysctl -w net.ipv4.ip_forward=1
B. gcloud compute instances add-tags [existing-instance] –tags no-ip
C. gcloud builds submit –config=cloudbuild.waml –substitutions=TAG_NAME=no-ip
D. gcloud compute instances create example-instance –network custom-network1
–subnet subnet-us-central
–no-address
–zone us-central1-a
–image-family debian-9
–image-project debian-cloud
–tags no-ip

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