Before upgrading from vCenter 4.x to 5.x, an administrator runs the vCenter Host Agent Pre-Upgrade Checker. The Checker reports an issue.
What would cause the vCenter Host Agent Pre-Upgrade Checker to report an issue?
A. The .NET framework 3.5 is installed.
B. The host network card is only 1 Gbps.
C. The file system is not intact.
D. The VMFS file system is version 4.0.
