Youre performing tablespace point-in-time recovery on a tablespace called USERS. If an object in that tablespace has a foreign key constraint owned by another object in the INDEX_TBS  which statement is true？（）  

• A、 You cannot perform the TSPITR with the constraints enabled.
• B、 You must perform the TSPITR recovery of both tablespaces for it to be successful.
• C、 You can perform TSPITR only on the USERS tablespace.
• D、 RMAN will determine if the INDEX_TBS tablespace must also be duplicated and will duplicate it  automatically.
• E、 The TSPITR will only be successful if the constraint is enabled.