单项选择题

A. The df command only counts the number of disk blocks……

Which of the following conclusions is most appropriate to draw to describe why du shows fewer blocks used than df?（）

A. The df command only counts the number of disk blocks and superblocks.
B. The df command ignores space used for inodes, gnodes, and vnodes.
C. The du command does not take into account filesystem metadata.
D. The du command counts indirect blocks and superblocks in its calculations.

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