Consider a router that interconnects subnets A and B$,$ as shown in the figure below. Suppose all of the interfaces in each of these two subnets are required to have the prefix $123\mathrm{.}43\mathrm{.}1/24($i$.$e$.$ a $/24$ CIDR portion of the IP space is provided$).$ Also suppose that Subnet A is required to support $100$ interfaces and Subnet B is required to support $110$ interfaces.