Which three solutions could correct this problem?

A virtual machine is exhibiting these symptoms:
Memory usage is constantly high (94% or greater) or constantly low (24% or less).
Free memory is consistently 6% or less and swapping frequently occurs
Which three solutions could correct this problem? (Choose three.)

A.
Verify that VMware Tools is installed on each virtual machine.

B.
Decrease the memory reservation setting, if higher than active memory.

C.
Add physical memory to the host.

D.
Disable the balloon driver in each virtual machine.

E.
Create a memory limit for each virtual machine.