A correctly-formatted entry has been added to /etc/hosts.allow to allow certain clients to
connect to a service, but this is having no effect. What would be the cause of this?

A.
The machine needs to be restarted.

B.
There is a conflicting entry in /etc/hosts.deny.

C.
The service needs to be restarted.

D.
tcpd needs to be sent the HUP signal.

E.
The service does not support tcpwrappers

Explanation: