Which of the following description is correct based on source and destination IP and port load sharing algorithm?

Which of the following description is correct based on source and destination IP and port load sharing algorithm?
A . This mode is highly reliable, but the network traffic will only be shared by one network card, and the other network card serves as a backup
B . When the message contains IP and port, use the source destination IP port and MAC for load sharing; when the message has only IP address, use IP address and MAC for load sharing; when the message has only MAC address, use MAC address for load sharing
C . This mode is generally used in scenarios where most of the network traffic is inside the Layer 2 network. This network traffic can be evenly hashed by MAC
D . This mode uses network traffic to be sent to each port completely and evenly, but a large number of messages may be out of order

Answer: B.