By default, when you click File > Switch Active File from SmartView Tracker, the SmartCenter Server

A.
Opens a new window with a previously saved log file

B.
Purges the current log file, and starts a new log file

C.
Purges the current log, and prompts you for the new log’s mode

D.
Saves the current log file, names the log file by date and time, and starts a new log file

E.
Prompts you to enter a filename, then saves the log file