You Need to Monitor Resources That Are Distributed Over Different

You need to monitor resources that are distributed over different projects in Google Cloud Platform. You want to consolidate reporting under the same Stackdriver Monitoring dashboard. What should you do?

A) Use Shared VPC to connect all projects, and link Stackdriver to one of the projects.
B) For each project, create a Stackdriver account. In each project, create a service account for that project and grant it the role of Stackdriver Account Editor in all other projects.
C) Configure a single Stackdriver account, and link all projects to the same account.
D) Configure a single Stackdriver account for one of the projects. In Stackdriver, create a Group and add the other project names as criteria for that Group.