You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Hyper-V server role
installed.
You need to configure storage for a virtual machine to meet the following requirements:
Support up to 3 TB of data on a single hard disk.
Allocate disk space as needed.
Use a portable storage format.
What should you configure?

A.
A fixed-size VHDX

B.
A pass-through disk

C.
A fixed-size VHD

D.
A dynamically expanding VHDX

E.
A dynamically expanding VHD

Explanation:
Support for virtual hard disk storage capacity of up to 64 TB.
vhd max is 2TB
Dynamically expanding virtual hard disk uses only as much physical storage space as it needs to store the
actual data that the disk currently contains. The size of the virtual disk’s image file then grows as additional data
is written to it.

http://technet.microsoft.com/en-us/library/cc720381(v=ws.10).aspx
Exam Ref 70-410: Installing and Configuring Windows Server 2012 R2: Objective 3.2: Create and Configure
virtual machine storage, Chapter 3: p. 157-158
70-410: Training Guide: Installing and Configuring Windows Server 2012 R2, Chapter 7: Hyper-V virtualization,
Lesson 2: Deploying and Configuring virtual machines, p. 320