4. You are to design a local public switched telephone network. This is only a local network and does not connect to the long-distance network. To keep things simple, your network only has 2 Components: switches and wire. The switch is for your central office (CO) and the wire is for yo ur local loops. Wire costs $5/foot/line. Assume that every house is 2,000 feet from the central o ffice. You may choose from the following switches: Name RT-500 SM-2000 BZ -5000 DMS 100 SESS Capacity 500 2,000 10,000 25,000 50,000 Cost $100,000 $200,000 $500,000 $1,000,000 $1,500,000 Please build a local network for a community of the following size AT LEAST COST and fill in the table: Total Cost Average Cost per House Type of Switch # of Cost of switches switches # of houses Cost of Wire 100 300 1000 5000 10000 20000 40000 100000 Does this cost "function exhibit economies of scale? Why or why not