Which three statements about NetFlow version 9 are correct? (Choose three.)

A.
It is backward-compatible with versions 8 and 5.

B.
Version 9 is dependent on the underlying transport; only UDP is supported.

C.
A version 9 export packet consists of a packet header and flow sets.

D.
Generating and maintaining valid template flow sets requires additional processing.

E.
NetFlow version 9 does not access the NetFlow cache entry directly.

Explanation: