Lucky help: Red Hat questions, urgent help!

Lucky help: Red Hat questions, urgent help! -- Linux general technology-Linux technology and application information. For details, refer to the following section. I don't have a few questions when I participate in the red hat market survey. I hope you can help me. The higher the score, the higher the chance to get a gift. You guys must help. Thank you!

Red Hat Enterprise Virtualization Server edition includes multiple service components ()
Option:
A. Red Hat Enterprise Virtualization Desktop Management Platform
B. Red Hat Enterprise Virtualization Server Management Platform
C. Red Hat Enterprise Virtualization Hypervisor
D. Red Hat Enterprise Linux 5.4


What is the general utilization efficiency of X86 server systems?
Option:
A.m. 80%-90%
B. 50%-60%
C. More than 90%
D. Smaller than 20%

Red Hat Enterprise Virtualization HA (High Availability/failover) functions can be achieved
Option:
A. After A problem occurs on the VM, it will continue running on other servers.
B. If a VM encounters a problem, it will be replaced by another VM on the same physical server.
C. When a physical server encounters a problem, other physical servers run the virtual machines of the faulty server.
D. The virtual machine goes down when a physical server encounters a problem


The gift is a red hat custom USB flash drive, a pillow, and a T-shirt. It is commemorative. I hope you can help me!
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If anyone wishes to get the full score, share the answer. Thank you!