Consider a router that interconnects three subnets: subnet 1, subnet 2 and subnet 3. Assume all the interfaces in each of these subnets are required to have an IP address that starts with 223.1.17/24. If subnet 1, subnet 2 and subnet 3 are required to support at least 60, 90 and 12 interfaces respectively, provide three network addresses of the form a.b.c.d/x that satisfy the constraints. Note there are many solutions that satisfy the constraints, but you just need to provide one.