You Have Received a Call from an Employee About Permissions

Multiple Choice

You have received a call from an employee about permissions on a shared folder,having found he can no longer access the resource.After checking the folder,you find that the group the employee is in is part of the resource's DACL,but seems to have no effect on the group's permissions.The group's permission entry is the only entry in the DACL.What is wrong?

A) The shared resource no longer exists
B) The group has been converted from a security group to a distribution group
C) The group has been added to "Deny access to shared resources" policy on the
D) The group has been converted from a distribution group to a security group