Regarding the 3 abnormal situations of the file type recognition result, which of the following...

File extension mismatch means that the file type is inconsistent with the file extension.

Unrecognized file type means that the file type cannot be recognized and there is no file extension.

File damage means that the file type cannot be identified because the file is damaged.

Unrecognized file type means that the file type cannot be recognized, and the file extension cannot be recognized.