The one that is not considered file metadata is the filename. The correct option is a.
File metadata can be thought of as supplementary information about a file that is carried along with it and makes it easier to use and find. It's not the document or photo itself, but rather information about it, such as the file's name, thumbnail image, or creation date.
Metadata, also known as data that describes other data, is structured reference data that aid in the sorting and identification of attributes of the material it describes.
Therefore, the correct option is a. filename.
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