A PostOnline trigger is being tested on a three-system cluster with system named SystemA,
SystemB, and SystemC. The trigger works on SystemA, but it fails to run on SystemB and
SystemC. What is a possible reason for this?

A.
The hatrigger script must be run on all systems to enable the PostOnline trigger.

B.
The PostOnline attribute is set to false on SystemB and SystemC.

C.
The PostOnline trigger is missing from SystemB and SystemC.

D.
The VCS engine had an error while replicating the trigger to SystemB and SystemC.