You are planning to deploy an Azure virtual machine. Which of the following storage service is used to store the virtual hard drive files for the virtual machine?

Answer options:

A.Blob
B.Files
C.Tables
D.Queues

Answer – A 
The data disks are stored in the Blob service of Azure storage accounts. 
The Microsoft documentation mentions the following. 

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on the Azure Blob storage, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blobs-introduction

Since this is clearly mentioned in the documentation, all other options are incorrect. 
For more information on the Azure Blob storage, please visit the below URL- 

https://docs.microsoft.com/en-us/azure/virtual-machines/windows/managed-disks-overview