You are asked to explore printer sales based on data which include the following features: A: the printing technology used by the printer, . B: the number of pages that the printer can print per minute, C: the printer's colour capability, either "b/w" (for black / white) or "colour", D: the weight of the printer, in kilograms. A table with some example rows is: W . model QuickPrint Brilliant Pix PenWriter A laser ink other OD is a categorical variable. A is a categorical variable. Check all statements about input variable types that are correct. C is a numerical variable. B 24 4 2 B is a numerical variable U b/w colour b/w D 14.4 8.5 4.6 1 pts