Suppose that Router A is aware of four network 100,200,300 and 400 and has the following current routing table shown in Table 1

Table 1:

Network	Hop Cost	Next Router
100	7	C
200	4	D
300	5	D
400	9	B

Now suppose Router B sends out the following routing information shown in Table 2.

Discuss and show how Router A update its routing table.

Table 2:

Network	Hop Cost
100	3
300	4
500	6
400	9