HOTSPOT
The settings for a virtual machine named VM2 are configured as shown in the VM2 exhibit. (Click the Exhibit button.)
The settings for Disk1.vhdx are configured as shown in the Disk1.vhdx exhibit. (Click the Exhibit button.)
The settings for Disk2.vhdx are configured as shown in the Disk2.vhdx exhibit. (Click the Exhibit button.)
Select Yes if the statement can be shown to be true based on the available information; otherwise select No. Each correct selection is worth one point.
Answer: 
Explanation:
If you want to compact a differencing virtual hard disk or an undo disk, you must merge the changes to the parent disk and then compact the parent disk, if it is a dynamically expanding virtual hard disk.
You can compact a dynamically expanding virtual hard disk. You cannot compact any other type of virtual hard disk. However, you can convert a fixed-size virtual hard disk to a dynamically expanding virtual hard disk and then compact the disk. If you want to compact a differencing virtual hard disk or an undo disk, you must merge the changes to the parent disk and then compact the parent disk, if it is a dynamically expanding virtual hard disk.
Reference: http://technet.microsoft.com/en-us/library/cc708394(v=ws.10).aspx