Jayne has four data sets. Data set A: 2, 3, 4, 1, 2, 4 Data set B: 3, 5, 7, 6, 2 Data set C: 8, 9, 7, 8, 7 Data set D: 3, 2, 1, 0, 2 The data set that has the widest spread is . The value that best represents the center of the data set with the widest spread is .