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单选题
Which of the following sequence of commands extracts the third image from a tape that was created using the backup command?（）
A
tctl -f /dev/rmt0.1 fsf 2 ; tar -xv file3
B
tctl -f /dev/rmt0.0 fsf 3 ; dd if=file3 pf =/dev/mt0.1
C
tctl -f /dev/rmt0.1 fsf 2 ; dd if=/dev/rmt0.1 of=file3
D
tctl -f /dev/rmt0.0 fsf 3 ; dd if=/dev/rmt0.1 of=file3
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