The letters​ A, B, and C are marked on the histogram. Describe the shape of the data. Then determine which is the​ mean, which is the​ median, and which is the mode. Justify your answers. Vacation Days Used by Employees 1 3 5 7 9 11 13 15 0 2 4 6 8 10 12 14 16 18 Number of Days Frequency A B C