What are two drawbacks of implementing a link-state routing protocol?

A.	the sequencing and acknowledgment of link-state packets
B.	the high volume of link-state advertisements in a converged network
C.	the requirement for a hierarchical IP addressing scheme for optimal functionality
D.	the high demand on router resources to run the link-state routing algorithm
E.	the large size of the topology table listing all advertised routes in the converged network