Explanation

Box 1: Yes
Scenario: Move the existing product blueprint files to Azure Blob storage.
Scenario: Use unmanaged standard storage for the hard disks of the virtual machines.
Page blobs are optimized for writes at random locations within a blob. They also support Unmanaged Disks.
Scenario:
SQL Server Data Files in Microsoft Azure enables native support for SQL Server database files stored as blobs. It allows you to create a database in SQL Server running in on-premises or in a virtual machine in Microsoft Azure with a dedicated storage location for your data in Microsoft Azure Blob storage.
Box 2: No
Box 3: No
References:
https://docs.microsoft.com/en-us/sql/relational-databases/databases/sql-server-data-files-in-microsoft-azure