You need to grant access for three users so that they can view and edit table data on a Cloud Spanner instance. What should you do?

You need to grant access for three users so that they can view and edit table data on a Cloud Spanner instance. What should you do?

A. Run gcloud iam roles describe roles/spanner.databaseUser. Add the users to the role. B. Run gcloud iam roles describe roles/spanner.databaseUser. Add the users to a new group. Add the group to the role. C. Run gcloud iam roles describe roles/spanner.viewer - -project my-project. Add the users to the role. D. Run gcloud iam roles describe roles/spanner.viewer - -project my-project. Add the users to a new group. Add the group to the role.