You have an Azure Storage account named storage1 that contains a blob container named container1. You need to prevent new content added to container1 from being...

You have an Azure Storage account named storage1 that contains a blob container named container1.
You need to prevent new content added to container1 from being modified for one year.
What should you configure?

A. the access tier B. an access policy C. the Access control (IAM) settings D. the access level