In SCTP, the state of a receiver is as follows:
a. The receiving queue has chunks 1 to 8, 11 to 14, and 16 to 20.
b. There are 1800 bytes of space in the queue.
c. The value of lastAck is 4.
d. No duplicate chunk has been received.
e. The value of cumTSN is 5.
Show the contents of the receiving queue and the variables. Show the contents of the SACK message sent by the receiver.