A Windows User Has Been Successfully Saving Documents to the File

Multiple Choice

A Windows user has been successfully saving documents to the file server all morning. However, the latest attempt resulted in the following message, "Could not find this item. Verify the location of '\\FileServer\Docs' and try again."
Which of the following is the most likely cause for this message?

A) The user signed out of directory services
B) The user's PC is out of local hard disk space.
C) The file server could not contact directory services.
D) The share to the file server is disconnected.