This is 'Data Communication and Networking'.Please write down the answer along with the solving process. There is a three-stage 'time division switching' with N=100. Ten crossbars are used in the first and third phases, respectively, and six crossbars are used in the middle. Design this switch as a new one with a minimum crosspoint using the 'CLOS Criteria' (A) Draw a schematic diagram. (B) Find the total number of crosspoint