Under which circumstances will the classic Debugger start as the Debugger?

Under which circumstances will the classic Debugger start as the Debugger?
A . None; the new Debugger will always start as the Debugger
B . When the number of debugging sessions exceeds half the number of dialog ‘―’ sessions.
C . If you manually switched to the classic Debugger during your last session
D . When you specify the default as the classic Debugger in the settings of the ^ ‘―’ Object Navigator.
E . When five modes already exist for this logon session.

Answer: D,E