Which profile or policy should be applied to protect against port scans from the internet?

Which profile or policy should be applied to protect against port scans from the internet?
A . An App-ID security policy rule to block traffic sourcing from the untrust zone
B . Security profiles to security policy rules for traffic sourcing from the untrust zone
C . Interface management profile on the zone of the ingress interface
D . Zone protection profile on the zone of the ingress interface

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Answer: D