How do TCP and UDP differ in the way that they establish a connection between two endpoints?

How do TCP and UDP differ in the way that they establish a connection between two endpoints?
A . TCP uses synchronization packets, and UDP uses acknowledgment packets.
B . UDP uses SYN, SYN ACK and FIN bits in the frame header while TCP uses SYN, SYN ACK and ACK bits.
C . UDP provides reliable message transfer and TCP is a connectionless protocol.
D . TCP uses the three-way handshake and UDP does not guarantee message delivery.

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Answer: D