please solve and explain how you got the answer

Consider the following map of six cities, indicated by the six dark numbered points. The five 1 ight-colored points labeled A through E indicate five candidate location for a new warehouse that will ship to each of the six cities: a. Suppose that the month1y amount to be shipped to each of the cities is as follows: 800 tons to City 1; 300 tons to City 2; 200 tons to City 3; 200 tons to City 4; 400 tons to City 5; and 100 tons to City 6. Given this shipping information, now which candidate location should be selected for the new warehouse? b. Suppose that the month1y amount to be shipped to each of the cities is as follows: 100 tons to City 1; 200 tons to City 2; 900 tons to City 3; 300 tons to City 4; 100 tons to City 5; and 200 tons to City 6. Given this shipping information, now which candidate location should be selected for the new warehouse