You need to update a deployment in Deployment Manager without any resource downtime in the deployment. Which command should you use?

You need to update a deployment in Deployment Manager without any resource downtime in the deployment.
Which command should you use?

A. gcloud deployment-manager deployments create --config B. gcloud deployment-manager deployments update --config C. gcloud deployment-manager resources create --config D. gcloud deployment-manager resources update --config