The fixed and variable costs for three potential manufacturing plant sites for a rattan chair weaver are shown: a) After rounding to the nearest whole number, site 1 is best below units. After rounding to the nearest whole number, site 2 is best between and units. After rounding to the nearest whole number, site 3 is best above units. b) If the demand is 323 units, then the best location for the potential manufacturing plant is