What does this indicate and whatcould be checked next?

A Windows virtual machine (VM) is experiencing poor application performance. The
suspected issue is a lack of available memory. Windows Task Manager shows 30% of the
memory within the VM is not currently being used. What does this indicate and what
could be checked next?

A.
The VM has memory available, however it may not actually have physical memory
available. VMkernel swap activity on the ESX Server host should be checked next.

B.
Windows Task Manager is not reading actual memory usage in the VM. Windows
System Monitor should be used to get a precise reading on memory usage.

C.
The application problems are definitely due to a non-memory related problem. CPU
affinity settings should be checked for this VM.

D.
The application problems are definitely due to a non-memory related problem. CPU
utilization should be checked next using Windows Task Manager.

Explanation:
The poor application performance due to suspected lack of available memory suggests
paging is the cause of the issue. If Windows Task Manager shows 30% of the memory
within the VM is not currently being used, then paging must be occurring within the VM
host. Therefore poor application performance should now be checked.