Which two statements about NetFlow support on Cisco IOS XR are true? (Choose two.)

A.
Cisco IOS XR supports NetFlow version 9 export format only.

B.
NetFlow version 9 is a flexible and extensible means to carry NetFlow records from a
network node to a collector.

C.
IP flow is based on a set of four parameters only (source IP address, destination IP
address, source port, and destination port).

D.
A NetFlow flow is the bidirectional sequence of packets on a single interface.