A pizzeria delivers pizzas to each customer and incurs a cost of $$1$ per unit and mile.Each unit needs to be delivered separately. The locations and the number of customersare provided in the Table below.LocationDistance from A $($miles$)$Number of customersA$030$B$10140$C$810$D$220$E$630$F$1840$Part $1$:$($a$)$ Where is the median customer located?$($b$)$ Where is the delivery cost minimizing location and what is its delivery cost?Part $2$:Where is the median location if the number of customers at B decreased from $140$ to $40?$What is the delivery cost from this location?