What are two system-defined zones created on the SRX Series Firewalls?

On SRX Series Firewalls, Junos OS automatically creates system-defined zones that have special functions:

Null zone (Option A): A predefined discard zone. By default, all interfaces belong to the null zone until assigned to a user-defined zone. Traffic destined to the null zone is dropped.

Junos-host zone (Option B): A predefined functional zone that allows security policies to control traffic directed to the SRX device itself (management traffic, such as SSH, HTTP, SNMP).

Management zone (Option C): There is a predefined management functional zone , but it is not called " management " as a system-defined security zone.

DMZ (Option D): A DMZ zone must be explicitly created by the administrator, it is not system-defined.

Correct Zones: null, junos-host