Based on the topology designed by the OT architect, which two statements about implementing OT security are true?

Refer to the exhibit.

Based on the topology designed by the OT architect, which two statements about implementing OT security are true? (Choose two.)
A . Firewall policies should be configured on FortiGate-3 and FortiGate-4 with industrial protocol sensors.
B . Micro-segmentation can be achieved only by replacing FortiGate-3 and FortiGate-4 with a pair of FortiSwitch devices.
C . IT and OT networks are separated by segmentation.
D . FortiGate-3 and FortiGate-4 devices must be in a transparent mode.

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Answer: A,C