The school cafeteria sells several types of pies at lunch. Last week it sold 12 apple pies, 19 pumpkin pies, and 30 blueberry pies.Which of the following would increase the range of the total number of pies sold?
a) Sell 2 fewer apple pies b) Sell 2 more pumpkin pies
c) Sell 2 fewer blueberry pies d) Sell 2 more apple pies