Which two statements explain antivirus scanning modes? (Choose two.)

Which two statements explain antivirus scanning modes? (Choose two.)

A. In flow-based inspection mode, files bigger than the buffer size are scanned. B. In proxy-based inspection mode, files bigger than the buffer size are scanned. C. In flow-based inspection mode, FortiGate buffers the file, but also simultaneously transmits it to the client. D. In proxy-based inspection mode, antivirus scanning buffers the whole file for scanning, before sending it to the client.