Standard and Premium are 2 different tiers of storage that are offered by Azure Files. These tiers allow you to tailor the cost and the performance of your file shares to accomplish the requirements. 
Fill in the blanks to complete the statement below. 
Standard file shares are backed by ________ and are deployed in ___________ storage account type. 

Answer options:

A.SSDs and FileStorage
B.HHDs and FileStorage
C.SSDs and GPv2
D.HHDs and GPv2

Correct Answer: D 
Standard file shares are backed by HHDs (hard disk drives) and are deployed in GPv2 (general-purpose version 2) storage account type. They offer reliable performance for I/O workloads which are less sensitive to performance variabilities like general purpose file shares and dev/test environments.
Option A is incorrect. These are Premium file shares which are backed by SSDs (solid-state drives) and FileStorage is the storage account type in which they are deployed.
Option B is incorrect. HHDs and FileStorage are the incorrect entries.
Option C is incorrect. SSDs and GPv2 are the incorrect entries to define standard file shares.
Option D is correct. Standard file shares are backed by HHDs and are deployed in GPv2 storage account type.
Reference: 
To know more about Storage options for FSLogix profile containers in Azure Virtual Desktop, please visit the below-given link: 

https://docs.microsoft.com/en-us/azure/virtual-desktop/store-fslogix-profile