Which firewall configuration must you perform to allow traffic to flow in both directions
between two zones?

A.
You can configure a single zone pair that allows bidirectional traffic flows from for any zone
except the self-zone

B.
You must configure two zone pairs, one for each direction

C.
You can configure a single zone pair that allows bidirectional traffic flows for any zone

D.
You can configure a single zone pair that allows bidirectional traffic flows only if the source zone
is the less secure zone.

Explanation:
A single zone pair is NOT bidirectional, so you must have two pairs to cover both directions.