Peter's mom wrote down the number of items purchased every week at the grocery store as well as the amount of money she spent. She transferred this information onto a graph. If there are only three people in the family, what would be a reasonable domain for this situation? A. {42, 58, 62, 71} B. {630, 870, 806, 923} C. {0, 16, 4, 9} D. {4, 5, 6, 7}