Consider the GBN protocol with sender and receiver window size as 5.Suppose client sends data 0,1,2,3,4 and only data packet 2 is lost and all ACKs are lost. What will be the content of receiver and sender window. Before Senders timeout value expires ?
A. Sender: 01234 , Receiver : 01234
B. Sender: 23456 , Receiver : 01234
C. Sender: 23456 , Receiver : 23456
D. Sender: 01234 , Receiver : 23456