You execute the commands on a multitenant container database CDB1 that has multiple pluggable databases: 

Which statement is true about the execution of the last command? 

Answer options:

A. It succeeds and displays all the tablespaces that belong to the root database.
B. It fails and returns an error because a connection is not made by using the sysdba privilege.
C. It succeeds and displays all the tablespaces that belong to the root and pluggable databases.
D. It fails and returns an error because SQL commands cannot be executed at the RMAN prompt.

A