Which data set could not be represented by the histogram shown? a) {8, 10, 13, 3, 14, 11, 4, 3, 8} b) {6, 10, 12, 7, 14, 11, 6, 3, 9} c) {7, 10, 12, 3, 14, 11, 4, 3, 9} d) {8, 10, 12, 3, 12, 11, 4, 3, 8}