单项选择题

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.