I hope you are aware of how to turn the auditing on for each service from developer.
Once you catch exception in service B or C exit with failure, the control will go to service A and from there also you will have to exit with failure for taking the advantage of resubmitting it from WmMonitor. Turn on auditing only for service A.
When you exit with failure you can give the failure message. This message you can see in WmMonitor screen. This service will be marked as status failed.