which three circumstances might the VMkernel use a swap file for a running virtual machine?

Assuming that ballooning is possible, under which three circumstances might the VMkernel use a
swap file for a running virtual machine? (Choose three.)

A.
The Mem.CtlMaxPercent value is between 10 and 25 percent.

B.
Memory cannot be reclaimed quickly enough.

C.
The virtual machine is starting up.

D.
VMware Tools is not installed.

E.
50% of the configured memory has already been ballooned.