Which three statements explain a flow-based antivirus profile? (Choose three.)

Which three statements explain a flow-based antivirus profile? (Choose three.)

A. Flow-based inspection uses a hybrid of the scanning modes available in proxy-based inspection. B. If a virus is detected, the last packet is delivered to the client. C. The IPS engine handles the process as a standalone. D. FortiGate buffers the whole file but transmits to the client at the same time. E. Flow-based inspection optimizes performance compared to proxy-based inspection.