1) Adjust the network shown below by the method of least squares. (10 pts.) B Course Distance (m) BC 1320.027 0.023 CD 1579.169 0.023 DA 1664.497 0.023 AC 2105.995 0.023 BD 2266.07 0.023 The coordinates (m) for control stations are: A: x = 4356.78 y = 2340.97 B: x =4359.83 y = 3981.00 a) What is the reference standard deviation, So? b) List the adjusted coordinates of the unknown stations and their standard deviations. c) Tabulate the adjusted observations, their residuals and their standard deviations