What is the correct sequence of the TCP 3-Way Handshake?

1. A PING, PONG, ACK, which is used in low-level hardware heartbeat protocols to ensure that two physical devices remain synchronized over a live cable.
2. B SYN, ACK, SYN-ACK, which allows two hosts to negotiate initial encryption keys and buffer sizes before any plaintext data is exchanged over the wire.
3. C HELLO, HELO, EHLO, which are the standard identification commands used by mail servers to initiate a transaction and negotiate supported extensions.
4. D SYN, SYN-ACK, ACK, which enables two hosts to establish a reliable, stateful connection and synchronize their internal sequence numbers for data tracking.