You share a folder named Folder1 on a computer that runs Windows XP Professional. Users report that they cannot access the folder from other computers on the network. You verify that all users can access Folder1 when logged on to the computer. You need to ensure that all users can access Folder1 from the network. What should you do?（）

• A、On Folder1, modify the share permissions.
• B、On Folder1, modify the NTFS permissions.
• C、Add all local user accounts to the Guests group. 
• D、Add all local user accounts to the Network Configuration Operators group.