A grocery store is trying to figure out how many delivery trucks it should purchase for the delivery of online grocery purchases. It currently has one delivery truck but business is expanding, so the company is considering adding up to 3 more trucks. The fixed and variable costs of owning a fleet of 2, 3 or 4 delivery trucks for 100, 200 or 300 grocery orders per week is shown in the table below. Currently the grocery store is delivering 100 orders per week. A neighboring grocery store has the same cost structure and is also facing 100 orders per week., what should they do to minimize cost