An administrator wants to use Time Machine to protect a SQL Server instance containing 90...

NDB supports SQL Server database groups so multiple databases can share one Time Machine and a coordinated protection schedule. Nutanix documents a maximum selection of 35 databases for group-registration workflows and states that Microsoft recommends no more than 35 databases in one database group. A SQL Server database server VM or cluster can contain as many as five NDB database groups. The efficient design for 90 databases is therefore three groups—for example, 35, 35, and 20 databases—with one Time Machine for each group. A single 90-database group exceeds the supported or recommended size, while creating 90 individual Time Machines or relocating databases to other servers introduces unnecessary operational overhead. Therefore, option B is correct. Nutanix SQL Server database-group documentation