A customer is debating whether to use Shared Ethernet versus Virtual Ethernet. Which of the following best describes a key difference between Shared and Virtual Ethernet？（）
- AShared Ethernet runs on POWER4 systems
- BVirtual Ethernet runs on POWER4 systems
- CShared Ethernet requires a Virtual I/O server and Advanced Power Virtualization
- DVirtual Ethernet requires a Virtual I/O server and Advanced Power Virtualizatio