A) Branched chain of glucose molecule linked by $\alpha - 1$, 4 glycosidic bond in straight chain and $\beta - 1$, 6 glycosidic bond at the site of branching
B) Branched chain of glucose molecule linked by $\alpha - 1$, 6 glycosidic bond in straight chain and $\beta$-1, 4 glycosidic bond at the site of branching
C) Unbranched chain of glucose molecule linked by $\beta$-1, 4 glycosidic bond
D) Unbranched chain of glucose molecule linked by $\alpha$-1, 6 glycosidic bond