A. because the threaded architecture requires exiting from sql*pIus and reconnecting with sql*PIus / as
sysdba before issuing a startup command

B. because the threaded architecture requires issuing a new connect / as sysdba from within sql*pIus
before issuing a startup command

C. because the threaded architecture requires authentication using a password file before issuing a
startup command

D. because the threaded architecture requires connecting to the instance via a listener before issuing a
startup command

E. because the threaded architecture requires restarting the listener before issuing a startup command