单选题A system dump has occured. The LED display shows 0c0. What does this indicate？（）AThe dump was successful.BA system dump is in progress.CNo system dump device configured.DThere was an I/O error during the dump.
单选题
A system dump has occured. The LED display shows 0c0. What does this indicate？（）
A
The dump was successful.
B
A system dump is in progress.
C
No system dump device configured.
D
There was an I/O error during the dump.
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