When configuring FortiGuard on FortiManger. Which two statements are correct regardingAllow Push Update settings configu

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When configuring FortiGuard on FortiManger. Which two statements are correct regardingAllow Push Update settings configured in the FortiGuard. Antivirus and IPS Settings?(Choose two)

A. If an urgent or critical FortiGuard Antivirus and/or IPS update becomes available, the FortiManger bult-in FDS will send push updatenotifications to each managed device.
B. If an urgent or critical FortiGuard Antivirus and/or IPS update becomes available, the FortiManger bult-in FDS will send push update notifications.
C. FortiManagers built-in FDS service may not correctly receive push updates if the external facing IP address of any intermediary NAT device is dynamic.
D. FortiManagers built-in FDS service does not allow an administrator to override the default FortiManger IP address and port used by the FDN to send update messages.