Which statement is true while performing a tape backup in an RMAN session?

The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which
statement is true while performing a tape backup in an RMAN session?

A.
The tape I/O performed is asynchronous

B.
The tape buffer is allocated from the System Global Area (SGA)

C.
The tape buffer is allocated from the Program Global Area (PGA)

D.
Oracle I/O uses an interrupt mechanism to determine when each I/O completes

Explanation:
RMAN allocates the tape buffers in the SGA or the PGA, depending on whether I/O slaves are
used. If you set the initialization parameter BACKUP_TAPE_IO_SLAVES = true, then RMAN
allocates tape buffers from the SGA or the large pool if the LARGE_POOL_SIZE initialization
parameter is set. If you set the parameter to false, then RMAN allocates the buffers from the PGA.