Which two statements about IGPs are true? (Choose two)
A. RIPv2 and OSPF are distance vector protocols
B. OSPF and EIGRP have high resource usage
C. IS-IS and EIGRP are link-state protocols
D. OSPF and IS-IS are classless protocols
E. RIPv2 and EIGRP support VLSM
F. RIPv2 and IS-IS claculate the metric of a link based on the bandwidth of a link