Assume files of the following sizes (from the point of view of the program - if, for example, we read the entire contents, we would get just such a number of bytes) - for each write how many bytes the file will actually occupy on disk, and justify the result: a) 189 B b) 1 MB c) 5.6 kB d) 0 B (empty file) - try to figure out how such a file would probably be represented in the file system