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The fixed and variable costs for three potential manufacturing plant sites for a rattan chair weaver are shown Site 1 2 3 Fixed Cost Per Year $700 $1,000 $2,100 Variable Cost per Unit $11.00 $6 00 $4.00 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 560 units, then the best location for the potential manufacturing plant is