For the following protocols, which pair of routing protocols does not support VLSM or classless
interdomain routing (CIDR)?
A.
RIPv1 and RIPv2
B.
Intermediate System-to-Intermediate System (IS-IS) and Open Shortest Path First (OSPF)
C.
EIGRP and IGRP
D.
RIPv1 and IGRP
Explanation: