Why should memory and network utilization be used to identify bottlenecks?

A.
Excessive memory and network utilization will slow the loading of vDisks and cache files by Provisioning Services.

B.
Excessive memory and network utilization on the vDisk store will slow down the PXE boot process.

C.
Excessive memory and network utilization can increase fragmentation of the TFTP boot strap file.

D.
Excessive memory and network utilization can increase fragmentation of the vDisks.