Lactose, Which Makes Up Between 2 to 8 Percent of Milk

Lactose, which makes up between 2 to 8 percent of milk (depending on the species) is a disaccharide, in which D-Galactose and D-Glucose are linked. What type of glycosidic bond can you discern?

A) " $\beta$ -1,4 glycosidic bond"
B) " $\alpha$ -1,4 glycosidic bond"
C) " $\beta$ -1,2 glycosidic bond"
D) " $\alpha$ -1,2 glycosidic bond"