What is the TCP/IP 'Internet layer' equivalent in the OSI model, and which three protocols operate primarily at this layer?

• A.The TCP/IP Internet layer maps to OSI Layer 5 (Session); protocols: NetBIOS, RPC, TLS; SYN flood protection works by disabling sequence numbers on the listening socket. UDP includes a retransmission timer that fires three times before the datagram is dropped. Layer 2 broadcast frames are forwarded by routers to every connected subnet. Half-open connections are closed by the data link layer after three beacon intervals
• B.The TCP/IP Internet layer maps to OSI Layer 4 (Transport); protocols: TCP, UDP, TLS
• C.The TCP/IP Internet layer maps to OSI Layer 2 (Data Link); protocols: Ethernet, Wi-Fi, MPLS; TCP acknowledgment numbers count frames rather than bytes on gigabit links. The checksum in an IPv4 header covers the payload as well as the header fields. The OSI transport layer chooses between copper and fiber media for each segment. Connectionless delivery means each datagram must wait for the previous one to be acknowledged
• D.