Oracle Database 12c Advance Adminstration1z0-063 Test 3

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RMAN> RUN{ 
   ALLOCATE CHANNEL c1 DEVICE TYPE sbt; 
   ALLOCATE CHANNEL c2 DEVICE TYPE sbt; 
   ALLOCATE CHANNEL c3 DEVICE TYPE sbt; 
   BACKUP 
   INCREMENTAL LEVEL - 0 
   (DATAFILE 1,4,5 CHANNEL c1) 
   (DATAFILE 2,3,9 CHANNEL c2) 
   (DATAFILE 6,7,8 CHANNEL c3); 
   SQL 'ALTER SYSTEM ARCHIVE LOG CURRENT'; 
 }

Which statement is true about the command?

It creates compressed backup sets.
It uses asynchronous I/O for the backup.
It uses parallelization for the backup set.
It uses multisection backup.

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