Which configuration keyword ensures that all in-progress sessions are re-evaluated upon committing asecurity policy change？（）

A.It holds security policies for particular hosts.
B.It holds statistics about traffic to and from particular hosts.
C.It defines hosts in a zone so they can be referenced by policies.
D.It maps hostnames to IP addresses to serve as a backup to DNS resolution.

A.Specify the IP address （172.19.1.1/32） as the destination address in the policy.
B.Specify the DNS entry （hostb.example.com.） as the destination address in the policy.
C.Create an address book entry in the Trust zone for the 172.19.1.1/32 prefix and reference this entry in the policy.
D.Create an address book entry in the Untrust zone for the 172.19.1.1/32 prefix and reference this entry in the policy

A.deny
B.discard
C.reject
D.close