Which Oracle Cloud Infrastructure compute shapes does not incur instance billing in a STOPPED state?

Which statement is true for an oracle cloud Infrastructure (OCI) compute instance?
Which option provides the best performance for running OLTP workloads in Oracle Cloud Infrastructure?
You were recently assigned to manage a project to deploy Oracle E-Business Suite on Oracle Cloud Infrastructure (OCI). The application will require a database, several servers, and a shared file system.
Which three OCI services are best suited for this project?
Which is a key benefit of using oracle cloud infrastructure autonomous data warehouse?