An Administrator Needs to Add an Application Exception

An administrator needs to add an Application Exception. When the administrator accesses the Application Exception dialog window, applications fail to appear. What is the likely problem?

A) The Symantec Endpoint Protection Manager is installed on a Domain Controller
B) The client computers already have exclusions for the applications.
C) The Learn applications that run on the client computers setting is disabled.
D) The clients are in a trusted Symantec Endpoint Protection domain.