4. (25 pts. The sales (in 1,000s of $) of ice-cream company for its leading two products as Magnum and Cornetto in 2018 in three cities as Istanbul, Ankara and Izmir is shown in matrix A, and the sales in the same cities in 2019 is shown in matrix B, where A = [400 250 1801 1450 300 350 B = 1390 280 2101 1480 290 3601 In 2020 this company focuses on a new marketing strategy and aiming a %20 increase in sales comparing the last year. What is the change in sales between 2018 and 2020? (Show the sales in matrix form, and interpret each entry.)