Which of the following statements is true of data loading?

Which of the following statements is true of data loading?
A . Resizing the virtual warehouse from x-Small to Small will process a single file twice as fast
B . The "deal file size for loading is 16MB to match micro-partition size
C . Marry files in the 10-lOOMB range tend to land In the ‘sweet spot" for load parallelism Once loaded, there is no option to force a reload of an already loaded file

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Answer: C