What are two circumstances for which it may be advisable to use the  silent uninstallation method instead of an interactive method？（）

• A、 The Administrator is unable to successfully export DISPLAY to a  remote server.
• B、 IBM Tivoli Workload Scheduler is installed on a server for which  there is no console access.
• C、 DNS is not working properly and the server cannot be accessed  remotely to run the uninstallation script.
• D、 TCP on the server on which IBM Tivoli Workload Scheduler is  installed is configured for half-duplex rather than full-duplex.
• E、 The remote IBM Tivoli Workload Scheduler server is multi-homed， thus  the return connection to IBM Tivoli Workload Scheduler cannot be  established thereby requiring the use of the silent  uninstaller.