How do you enforce this set of criteria on the SRX Series device?

You want to source NAT all traffic initiated from Host A behind an SRX Series device to Server B. The internal transport address must be mapped to the same external transport address. Also, the external Server B must not communicate with the internal Host A using the NAT IP address/port unless the internal Host A has already communicated with the external Server B.

How do you enforce this set of criteria on the SRX Series device?

A.
Configure port randomization and pool overloading for source NAT.

B.
Configure pool overloading and persistent NAT for source NAT.

C.
Turn off port randomization and configure persistent NAT for source NAT.

D.
Turn off pool overloading and configure persistent NAT for source NAT.