A user`s corporate email is missing the shared inbox folders that were present before the user went on vacation. The technician verifies the user is connected to the domain and can still send and receive email. Which of the following is MOST likely causing the missing folders issue? 

Answer options:

A. The Internet security options have changed
B. The operating system updates have changed
C. The network directory permissions have changed
D. The user account permissions have changed

C