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 the three-way handshake, and UDP does not guarantee message delivery.
B . TCP uses synchronization packets, and UDP uses acknowledgement packets.
C . UDP provides reliable message transfer, and TCP is a connectionless protocol.
D . UDP uses SYN, SYN ACK, and FIN bits in the frame header while TCP uses SYN, SYN ACK, and ACK bits.

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Answer: A