Your company plans to replace the current virtualization solution by using multiple Hyper-V hosts that run Windows Server 2008 R2 Service Pack 1 （SP1）. You are evaluating the power consumption technologies available in Hyper-V. You need to identify which technology will reduce the power consumption of the Hyper-V hosts. Which technology should you identify？（）

A. Second-Level Address Translation （SLAT）
B. CPU Core Parking
C. Multipath I/O
D. a Virtual Desktop Infrastructure （VDI）
E. Microsoft Application Virtualization （App-V）
F. fixed-size disks
G. differencing disks
H. Device Client Access Licenses （CALs）
I. pass-through disks
J. Dynamic Memory
K. User Client Access Licenses （CALs）
L. Microsoft Enterprise Desktop Virtualization （MED-V）
Microsoft Software Assurance
N. a legacy network adapter
O. VM snapshot