Which statement about IDS/IPS design is correct?

Which statement about IDS/IPS design is correct?

A.
An IPS should be deployed if the security policy does not support the denial of traffic.

B.
An IPS analyzes a copy of the monitored traffic and not the actual forwarded packet.

C.
An IDS analyzes a copy of the monitored traffic and not the actual forwarded packet.

D.
Bandwidth considerations must be taken into account since IDS is deployed inline to traffic flow.