Which of the following statements about the DiffServ and IntServ QoS models is FALSE?

IntServ uses a protocol like RSVP to provide QoS guarantees on a per-flow basis.

DiffServ groups multiple microflows into bigger streams called macro flows.

Intserv requires that network routers allocate resources for thousands of individual flows.

Diffserv classifies packets into forwarding classes only at the first network hop.