Which troubleshooting tools are available on the Cisco TelePresence VCS (X5 or above)?
A. configuration logs for all endpoints registered, endpoint status logs, and Cisco TelePresence MCU conference reports
B. system resources, call history, search history, zone and subzone status, warnings, event logs
C. H.323, SIP, and ISDN syslogs for each endpoint registered, all logs for all calls on the network
D. searches, locate tools, check rules, syslog, call history, current calls, call logs from the endpoints
