Which two log files contain the issues related to audio quality?

Which two log files contain the issues related to audio quality? (Choose two.)

A.
diag_CuMixer_*.uc

B.
diag_CuNotifier_*.uc

C.
diag_CuSysAgent_*.uc

D.
diag_SttService_*.uc

E.
diag_CuReportDataHarvester_*.uc

F.
diag_CuCsMgr_*.uc