Please explain why each statement is correct or not correct :)

Which of the following statements about UDP are correct? UDP has a checksum to detect bit errors, but it is not always used by the applications using UDP. UDP has a retransmission mechanism to deal with packet loss, but it is not always used by the applications using UDP. UDP does not have any mechanisms to deal with congestion. UDP leaves it up to the application to decided how to deal with packet loss and bit errors. If a client sends two messages to a server, UDP will guarantee that they arrive in the correct order. UDP guarantees that all UDP packets between a sending and receiving process take the same path through the network