Which of the following methods cannot rule out the problem that the virtual machine in the Huawei desktop cloud cannot be logged in?

Which of the following methods cannot rule out the problem that the virtual machine in the Huawei desktop cloud cannot be logged in?
A . Check by TC
C . Users log in to check virtual machine through FusionCompute on VNC
D . Try whether the same TC can log in to other virtual machines normally.
E . Check the desktop cloud system through FusionCare.

Answer: A