Examine this syntax which allocates channels during a parallel image copy:  <br /> RMAN> CONFIGURE DEVICE TYPE disk parallelism 4: <br /> 2> COPY <br /> 3> datafile 1 TO ‘/BACKUP/datafile1.dbf’, <br /> 4> datafile 2 TO ‘/BACKUP/datafile2.dbf’, <br /> 5> datafile 3 TO ‘/BACKUP/datafile3.dbf; <br /> RMAN>COPY <br /> 2> datafile 4 TO ‘/BACKUP/datafile4.dbf’;  <br /> How many channels are used?()<p> Examine this syntax which allocates channels during a parallel image copy:  <br /> RMAN> CONFIGURE DEVICE TYPE disk parallelism 4: <br /> 2> COPY <br /> 3> datafile 1 TO&ensp
A、A.0
B、B.1
C、C.3
D、D.4