$1.$ Suppose that you need to design a wireless network for a power control system, in which there are a number of electronic devices to monitor the running states of different parts of the power system. Every second, each device needs to report their status $($around $100$ bytes data$)$ to a control center. Which wireless standard$/$technology will you choose, WiFi, ZigBee, or Bluetooth? Justify your answer from the perspectives of performance efficiency, deployment cost, and transmission range.