Which of the Following Is the Best Example of a Modified

Which of the following is the best example of a modified rebuy?

A) A contractor buying shingles from the same supplier for the roof of the fifteenth house he is building in Tara Woods.
B) The production manager of a meat processing plant is buying a $90,000 high-tech meat slicing machine that will save the company an estimated $20,000 annually in wastage.
C) A supermarket manager reordering 24 replacement plastic pallets for storing food.
D) The purchasing department at a university making a buying decision about its long distance telephone service provider.