Which of the Following VMware Backup Network Configurations Doesn't Fit

Multiple Choice

Which of the following VMware backup network configurations doesn't fit for backing up data to tape directly (don't consider FC virtualization) ?

A) Both VSA and MA are installed on VMs.
B) VSA, MA and ISE are installed on physical machines.
C) VSA is installed on VM, and the MA is installed on the physical machine.
D) Both VSA and MA are installed on physical machine.