Why would an administrator want to disable a rule ?

A.
Only when verifying a security policy without affecting the actualfirewalled network

B.
Only when enforcing a security policy without affecting the actualfirewalled network

C.
Only when testing a security policy on external network without affecting the actualfirewalled network

D.
Only when installing a security policy without affecting the actualfirewalled network

E.
Only when troubleshooting a firewall problem