Suppose you're given a data set that classifies each sample unit into one of four categories: A, B, C, D. You plan to create a computer database consisting of these data, and you decide to code the data as A = 1, B = 2, C = 3, and D = 4. Are the data consisting of classification A, B, C, and D qaulitative and quantitative? After the data are input as 1, 2, 3 or 4, are they qualitative or quantitative?