The correct answers are A and C.

Option C is correct because the profile clearly contains the Operational Technology category and specific OT application signatures such as Modbus and IEC.60870.5.104. The study guide says ''You can use application control signatures to detect OT protocols'' and ''You can filter to a specific OT protocol.'' That means OT application signatures are active in this sensor profile.

Option A is correct because the guide explains that application control works at different levels: ''Detection of protocol (one detection per session)'' and ''Message level (one detection per protocol message).'' It also says you can use application signatures for ''granular message type identification.'' In the exhibit, IEC.60870.5.104.Control.Functions is explicitly configured, which is a granular IEC message/control-level signature rather than only a protocol-level match. That means logging and control can occur at the IEC command level.

Option B is not correct because the profile shows Modbus configured at the parent protocol level as Monitor, while the guide states that the ''parent signature takes precedence over the child signature.'' Since protocol-level detection is one detection per session, that does not mean FortiGate will necessarily log each Modbus command individually.

Option D is incorrect because even though the broader Operational Technology category is set to block, the profile includes specific application and filter overrides for Modbus and IEC 104 behavior. So the resulting effect is not simply that all OT protocols are blocked.