Which two statements about Junos software packet handling are correct?

Which two statements about Junos software packet handling are correct? (Choose two.)

A.
The Junos OS applies service ALGs only for the first packet of a flow.

B.
The Junos OS uses fast-path processing only for the first packet of a flow.

C.
The Junos OS performs policy lookup only for the first packet of a flow.

D.
The Junos OS applies SCREEN options for both first and consecutive packets of a flow.