What is the benefit of VLSM?

What is the benefit of VLSM?
A . reduces configuration complexity by using the same subnet mask length
B . reduces the routing table size by using automatic route summarization
C . reduces the routing table size by using manual route summarization
D . allows the subnet mask and classful routing updates to be advertised
E . secures the hosts on a subnet by using RFC 1918 addresses

View Answer

Answer: C