The correct option is D All the above
Carbohydrases are a set of enzymes that catalyse the breakdown of carbohydrates into smaller parts, including disaccharides and monosaccharides.
Lactase is an enzyme that breaks down lactose, a sugar (carbohydrate) into galactose and glucose.
Cellulase is responsible for breaking down cellulose (carbohydrate).
Amylase, which is secreted by salivary glands and the pancreas, converts starch into maltose and dextrin.
Hence, all the above options are different types of carbohydrases.