Which statements describe the routing protocol OSPF? (Choose three.)

Which statements describe the routing protocol OSPF? (Choose three.)

A. It supports VLSM. B. It is used to route between autonomous systems. C. It confines network instability to one area of the network. D. It increases routing overhead on the network. E. It allows extensive control of routing updates. F. It is simpler to configure than RIP v2.