Question about the root path on Windows

When we backup drives in Windows we use i.e. D:\ but the path, at least for restic, includes /D/ so when we make exclusions and we want to specify that the files/folders are to be matched in the root, we have to prepend a / like the manual says or we have to enter /D/?

Asking mostly because when I wanted to restore a file and I used --include to only restore that one file I’ve had to enter i.e. /D/Folder A/Folder C/file.txt instead of /Folder A/Folder C/file.txt which is what I was kinda expecting to be accepted.

Excludes should be specified in the format of the filesystem, e.g. D:\System Volume Information