a furniture department from their factories to their warehouses according to the following chart. The supply and the demand of chairs are provided in the chart as well. chart What is the objective function? Minimizing shipping cost = $20XNM + $15XNR + $18XKM + $23XKR + $20XCM + $25XCR + $30XMA + $25XMH + $15XMD + $40XML + $15XRA + $20XRH + $25XRD + $30XRL Minimizing shipping cost = XNM + XNR + XKM + XKR + XCM + XCR + XMA + XMH + XMD + XML + XRA + XRH + XRD + $XRL Maximizing shipping cost = $20XNM + $15XNR + $18XKM + $23XKR + $20XCM + $25XCR + $30XMA + $25XMH + $15XMD + $40XML + $15XRA + $20XRH + $25XRD + $30XRL Minimizing shipping cost = $20 + $15 + $18 + $23 + $20 + $25 + $30 + $25 + $15 + $40 + $15 + $20 + $25 + $30