What is an advantage of a link-state dynamic routing protocol?

A. The only metric needed is hop count.
B. Link-state dynamic routing protocols support CIDR and VLSM.
C. OSPF requires only a small amount of resources such as CPU and RAM.
D. Link-state dynamic routing protocols use triggered updates for recalculation of routing tables.

D. OSPF employs Link-State-Announcement (LSA) flooding and triggered updates. When these occur, every participating router will recalculate its routing tables.