Many of the Independent Grocery Stores in Hamilton Use the Same

Many of the independent grocery stores in Hamilton use the same bags at the checkout and the same polystyrene trays for meats in the meat department. What can these stores do to minimize the costs of the bags and the trays?

A) The stores can independently search for new vendors
B) The stores can work together to encourage recycling
C) The stores can outbid each other to pay the lowest cost on the products
D) The stores can independently purchase lower-grade products
E) The stores can work together and run a reverse auction to find a low-cost supplier